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Genshin Impact

Hydroculus Locations and Interactive Map

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Genshin Impact - Hydroculus Locations and Map

There are 271 Hydroculus in total found in Fontaine for Genshin Impact. They are collectible items used to level up the Statue of the Seven. See all Hydroculus locations with our interactive map and how to get them here!

Elemental Oculus Items
Genshin - All OculiAll Oculi Genshin - AnemoculusAnemoculus Genshin - Geoculus GuideGeoculus Genshin - Electrocolus GuideElectroculus
Genshin - DendroculusDendroculus Genshin - HydroculusHydroculus Gesnhin - PyroculusPyroculus Genshin - LunoculusLunoculus

Interactive Hydroculus Map

Hydroculus Locations Map

・Click on the arrow in the upper left corner to access our sidebar to check all other pins and even search for individual pins.
・Pins checked off the map will reflect in the list below.
We encourage users to sign up and log in to save your progress with the map.
Note: You can toggle the Area drop down menu to see other Fontaine map areas!

The Nostoi Region and Sea of Bygone Eras, have a total of 55 Hydroculi, bringing the overall total Hydroculus to 271!

Fontaine Map Guide

Surface Hydroculus Locations

All Hydroculus Locations in Fontaine's Surface

Select a surface section below!
4.0 Locations
Beryl Region
Belleau Region
Court of Fontaine
4.1 Locations
Liffey Region
Fontaine Research Institute
4.2 Locations
Erinnyes Forest
Morte Region
4.6 Locations
Nostoi Region
Tip: Use your browser's page search function to navigate the page by searching a Hydroculus number from the map!

4.0 Surface Hydroculi Locations

4.0 Surface Hydroculi Locations

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Tip: Use your browser's page search function to navigate the page by searching a Lunoculus number from the map!
✔️ Item How to Get
Hydroculus 1
Location:
Located on top of a boat on the way from Sumeru to Fontaine. Use a Waverider to get there or use the Four-Leaf Sigil located at the bottom of the Hydroculus.
Hydroculus 2
Location:
Located just ahead of the Romaritime Harbor Statue of Seven. Climb up near the pillars then just glide down to get the Hydroculus, or summon the Aquabus.
Hydroculus 3
Location:
Located on top of the mountain by the Denouement of Sin artifact domain.
Hydroculus 4
Location:
Located on a hill, the Hydroculus is on top of an artist easel with a blank canvas, facing the direction of the West Slope of Mont Automnequi.
Hydroculus 5
Location:
Located on the side of the mountain, inside a hole dug into the ground surrounded by Meka enemies.
Hydroculus 6
Location:
Located on top of an incredibly tall rock, north of the nearest surface teleport waypoint. There is a nearby tower with two Clockwork Meka enemies at the base of the rock.
Hydroculus 7
Location:
Find 3 Seelies to summon a hydro ring. Ride it to the top of a platform that gives you a jumping boost and jump to the Hydroculus and a chest!
Hydroculus 8
Location:
Located floating high above an arena east of the Beryl Region. Follow the Seelie to activate hydro rings at the top of a nearby cliff, use the rings to propel yourself towards the Hydroculus.
Hydroculus 9
Location:
Located at the peak of a rocky mountain near the center of the Beryl Region.
Hydroculus 10
Location:
Located at some ruins west of the Statue of the Seven in the Beryl region.
Hydroculus 11
Location:
Defeat the Hydro Hilichurl Rogue on the cliff to gain access to this ship. Then, use the Pneuma Block to unlock both a Remarkable Chest and a path to the Hydroculus.
Hydroculus 12
Location:
Located on top of a rib-like stone at the center of the Elynas, Beryl region.
Hydroculus 13
Location:
Located on top of a rib-like stone pillar north of the Elynas waypoint.
Hydroculus 14
Location:
Located north of the Elynas area, at the tip of another rib-like stone right beside a Hilichurl camp on the beach.
Hydroculus 15
Location:
Located at the tip of a rib in the upper-center Elynas area of the Beryl Region. Glide down to this area from the nearby cliff-top teleport waypoint or climb the rocky outcrop to the Hydroculus.
Hydroculus 16
Location:
Located on top of a small mountain east of the Statue of Seven in the Beryl Region.
Hydroculus 17
Location:
Located on another boat southeast of the Statue of Seven in the Beryl Region.
Hydroculus 18
Location:
Located on another boat south of the West Slopes of Mont Automnequi. Climb up the boat and jump to get the Hydroculus.
Hydroculus 19
Location:
Located on an island south of the West Slopes of Mont Automnequi. The Hydroculus is guarded by an Anemo Hilichurl Rogue.
Hydroculus 20
Location:
Located on top of a small rocky mountain north of the Emperor of Fire and Iron location. Climb up this mountain to get this Hydroculus.
Hydroculus 21
Location:
Located floating in the air by the Aquabus path in West Slopes of Mont Automnequi. Use the Hydro Rings on top of the house to grab the Hydroculus.
Hydroculus 22
Location:
You can either climb the rocky mountainside and use anemo on the pinwheel at the top to get to the Hydroculus, or you can find Antoine at the base of the mountain and use pneumosia to ride his flying balloon ship all the way to the Hydroculus.
Hydroculus 23
Location:
Located inside the Aquabus tunnel in the West Slopes of Mont Automnequi.
Hydroculus 24
Location:
Located at the tip of a spiral shipwreck structure in Poisson. Climb up to reach this Hydroculus.
Hydroculus 25
Location:
Located on top of a tower guarded by Meka dogs. Find the nearby pneuma and ousia blocks to solve the puzzle, defeat all meka dogs to unlock the remarkable chest and use the resulting hydro ring to get to the top of the tower.
Hydroculus 26
Location:
Located on top of a house right by the water, north of the West Slopes of Mont Automnequi.
Hydroculus 27
Location:
Located in the middle of the three islands south of the Court of Fontaine, just above the water. Take a Waverider and exit just below the Hydroculus to be able to reach it.
Hydroculus 28
Location:
Located on an island north of the Belleau Region, guarded by a Clockwork Meka.
Hydroculus 29
Location:
Located floating above the water southeast of the Court of Fontaine. Find 3 Seelies underwater to activate the Echoing Conch, enter the hydro ring within the group of fish to launch yourself towards the Hydroculus.
Hydroculus 30
Location:
Located on the roof of the train station entering Court of Fontaine. Get here by climbing or using the hydro ring at the base of the structure.
Hydroculus 31
Location:
Located east of the Opera Epiclese, floating high above the water. To get it, successfully fish one time to summon a hydro ring and enter to launch yourself upwards.
Hydroculus 32
Location:
Located under the bridge entering the Court of Fontaine by way of Aquabus.
Hydroculus 33
Location:
Located on a small structure above the water, south of the Court of Fontaine. Use the hydro ring to grab the Hydroculus.
Hydroculus 34
Location:
Located on top of the large green arch at the center of the Court of Fontaine. Climb the arch from the sides to get to the Hydroculus.
Hydroculus 35
Location:
Located submerged in the shallow pond northeast of the Court of Fontaine, still within the city walls.
Hydroculus 36
Location:
Located on the roof of a circular building north of the Court of Fontaine, attached to the outer wall.
Hydroculus 37
Location:
Located on the top of the largest building in the Court of Fontaine.
Hydroculus 38
Location:
Located northwest of the Court of Fontaine by the shoreline. Solve the Seelie puzzle to summon an updraft that can carry you towards the Hydroculus.
Hydroculus 39
Location:
Located on top of a tower northwest of the Court of Fontaine. Find the highest point in the surrounding mountains then glide towards the tower.
Hydroculus 40
Location:
Located on top of a silo in a settlement northwest of the Court of Fontaine.
Hydroculus 41
Location:
Located on a lavender field northwest of the Court of Fontaine, near a teleport waypoint. Use the clover pinwheel in the field to launch yourself up to the floating Hydroculus.
Hydroculus 42
Location:
Located at the top of a Hilichurl Base northwest of the Court of Fontaine.
Hydroculus 43
Location:
Located at the end of the water canal north of the Court of Fontaine.
Hydroculus 44
Location:
Located northeast of the Court of Fontaine. Dive underneath the Antoine Aircraft and borrow the nearby Aberrant Stingray's power to cut off the Yellow Fontemer Seagrass sticking to the craft. Simply ride the aircraft up using the pneumosia device until you reach the Hydroculus.
Hydroculus 45
Location:
Located at the top of the mountains north of the Court of Fontaine.
Hydroculus 46
Location:
Located on top of a tree at Marcotte Station, just south of the teleport waypoint. you can use the hydro ring to grab the Hydroculus on the way to the top of the cliff.
Hydroculus 47
Location:
Located at the center of the fountain at Marcotte Station, on the way south of the Fountain of Lucine.
Hydroculus 48
Location:
Located under the center of the bridge at the Opera Epiclese.
Hydroculus 49
Location:
Located at the very top of the tall archway at the end of the Opera Epiclese overlooking the water.
Hydroculus 53
Location:
Located in the boiling water. To unlock this area, you will need to solve the Boiling Water Puzzle in the Beryl Region, Fontaine.
See related guide on how to get it!

4.1 Surface Hydroculi Locations

4.1 Surface Hydroculi Locations

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Tip: Use your browser's page search function to navigate the page by searching a Lunoculus number from the map!
✔️ Item How to Get
Hydroculus 86
Location:
Located south of the Liffey Region Statue of Seven. Climb the nearest high platform and glide towards the Hydroculus.
Hydroculus 87
Location:
Located just southwest of the Liffey Region Statue of the Seven high up the mountaintop.
Hydroculus 88
Location:
Located near the Statue of the Seven in the Liffey Region. Look southeast to see the Hydroculus on a broken pillar.
Hydroculus 89
Location:
Can be found floating above the river in Mont Esus East, near the Large Pneumousia Relay Station.
Hydroculus 90
Location:
Located on a buoy floating south of Mount Esus East.
Hydroculus 91
Location:
Located by the cliff north of Mont Esus East. Collect hydrogana and activate the hydro mechanism to make a temporary bridge to the Hydroculus.
Hydroculus 92
Location:
Can be found north of Mont Esus East, near the Large Dendro Slime.
Hydroculus 93
Location:
Continue north from #92 to find the Hydroculus floating above the box crates.
Hydroculus 94
Location:
Located far north of Mont Esus East, on top of the tower. Use the Hydro ring on the cliff to quickly reach the tower's peak.
Hydroculus 95
Location:
Located in the northernmost tip of the Liffey region, on the highest point of a small island inhabited by Hilichurls.
Hydroculus 96
Location:
Located north of the Millennial Pearl Seahorse, on top of the tallest pipe on a structure on the beach.
Hydroculus 97
Location:
Climb to the top of the tall golden tower north of the New Fontaine Research Institute to find the Hydroculus.
Hydroculus 98
Location:
Located on the map's northernmost edge, north of the New Fontaine Research Institute, and is guarded by a Frost Operative.
Hydroculus 99
Location:
Situated on the highest cliff to the north of the New Fontaine Research Institute.
Hydroculus 100
Location:
Located on the rocky mountain to the northwest of the New Fontaine Research Institute.
Hydroculus 101
Location:
Located at the center of the New Fontaine Research Institute area, on top of the tent roof.
Hydroculus 102
Location:
Located in the gap of the broken bridge leading out of the New Fontaine Research Institute.
Hydroculus 103
Location:
Break the Hydro Stone to summon a Hydro Ring, then ride it to the puzzle above.
Hydroculus 104
Location:
Located east of the Fontaine Research Institute by a stairway.
Hydroculus 105
Location:
Located beneath the ruins northeast of the New Fontaine Research Institute.
Hydroculus 106
Location:
Located at the very top of a tall tower to the north of the Central Laboratory Ruins.
Hydroculus 107
Location:
Located inside a locked ruin, northwest of Central Laboratory Ruins. Unlock the door by recharging the Terminal with a portable storage energy.
Hydroculus 108
Location:
Located slightly north of the Central Laboratory Ruins Teleport Waypoint, at the end of a ruined bridge.
Hydroculus 109
Location:
Located in a ruin in the Central Laboratory Ruins. Dive into the water and swim to it.
Hydroculus 110
Location:
Head to the center of the Central Laboratory Ruins, then climb the floating debris until you reach the uppermost piece, which contains the Hydroculus.
Hydroculus 111
Location:
Located at the end of a broken bridge, southeast of Central Laboratory Ruins.
Hydroculus 112
Location:
Can be found inside a hilichurl camp, south of the Teleport Waypoint, in the claw of a metal sculpture.
Hydroculus 113
Location:
Located immediately north of the Fontaine Research Institute Statue of the Seven at the end of a broken bridge.
Hydroculus 114
Location:
Located at the base of the broken bridge, south of the ruins of the Central Laboratory.
Hydroculus 115
Location:
Located just southwest of the Fontaine Research Institute, in between of a damaged pillar.
Hydroculus 116
Location:
Located west of the Fontaine Research Institute Statue of the Seven, at the very end of a broken bridge.
Hydroculus 117
Location:
Found on top of a tall pillar to the west of the Fontaine Research Institute Statue of the Seven. Glide over from the nearby Teleport Waypoint to obtain it.
Hydroculus 118
Location:
Located on a short bridge pillar southwest of the Fontaine Research Institute teleport waypoint.
Hydroculus 119
Location:
Located in the Fontaine Research Institute Region, behind a fallen pillar and west of a Teleport Waypoint.
Hydroculus 120
Location:
Located on a tiny mountain across the broken bridge from the Liffey Region Statue of the Seven. Simply climb the mountain to obtain it.
Hydroculus 121
Location:
Located on a mountaintop southwest of the Fontaine Research Institute Statue of the Seven. To get it, use the Teleport Waypoint nearby, then proceed southwest and climb the mountain.
Hydroculus 122
Location:
Located on top of the broken wall around the arena of the Experimental Field Generator.
Hydroculus 123
Location:
Located on top of a small tower to the south of the Experimental Field Generator. Simply glide off the nearby cliff to get it.
Hydroculus 124
Location:
Located near the southern Teleport Waypoint in the Fontaine Research Institute. Activate nearby Hydro mechanism and destroy the Jadewater Fruit to free two Seelie and remove the barrier.
Hydroculus 125
Location:
Located on a building's roof southwest of the Fontaine Research Institute Statue of the Seven. Simply glide from the bridge to obtain it.
Hydroculus 126
Location:
Located southeast of the Fontaine Research Institute Statue of the Seven on top of a ruin. Simply climb the ruin to obtain it.
Hydroculus 127
Location:
Located in a small ruin upstream, east of the Fontaine Research Institute Statue of Seven.
Hydroculus 128
Location:
Located on top of a small house in the southeast part of the Fontaine Research Institute area.

4.2 Surface Hydroculi Locations

4.2 Surface Hydroculi Locations

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✔️ Item How to Get
Hydroculus 151
Location:
Just on a dead tree, past the rocky mountains north of the Marcotte Station.
Hydroculus 152
Location:
North of Marcotte station. You can glide from the short mountain south of the Hydroculus to get it.
Hydroculus 153
Location:
North of Loch Urania. To solve puzzle, head onto the water and investigate the seelie, which will lower the water level and give an exquisite chest. Use the Pneuma Orb in the shell nearby to destroy the Ousia mechanism.
Hydroculus 154
Location:
Climb on top of a small mountain north of Marcotte Station to get the Hydroculus, beside a Time Trial Challenge.
Hydroculus 155
Location:
Southwest of Loch Urania. Grab the Xenochromatic Octopus ability and push the jellyfish, which you can use to reach the Hydroculus.
Hydroculus 156
Location:
On top of the giant bubble in Loch Urania. You can access it after completing the Wild Fairy of Erinnyes quest.
Hydroculus 157
Location:
East of Loch Urania. Light up the three anemo monuments, and defeat the eye of the storm that will spawn. It will flee, creating a wind current. Fly up and get the hydroculus, and the eye of the storm can also be battled again.
Hydroculus 159
Location:
North of Willow Tree Lake, inside tent beside a Local Legend enemy named Rocky.
Hydroculus 160
Location:
Found on top of some ruins to the right of the Weeping Willow of the Lake.
Hydroculus 161
Location:
Located east of the Weeping Willow of the Lake. Clear out the Bacteria Mats on the small pond. Then dive and follow the revealed path. The Hydroculus will be at the end, under a sewer grate.
Hydroculus 163
Location:
Placed on top of a small hill in the northeast part of Erinnyes Forest.
Hydroculus 164
Location:
Placed on top of a big rock east of Weeping Willow Lake, and treasure hunters can be found at the base of the rock.
Hydroculus 165
Location:
Located southeast of the Weeping Willow of the Lake, submerged in a small pool. Use the Xenochromatic Ball Octopus located east of this lake so you can dive underwater and get the Hydroculus.
Hydroculus 166
Location:
Located southeast of Weeping Willow Lake; release the three jellyfish from different pyro puzzles to receive the Hydroculus.
Hydroculus 167
Location:
Can be found in Weeping Willow of the Lake, between the tree roots.
Hydroculus 169
Location:
On top of rock cliff next to an Anemo Hilichurl Rogue.
Hydroculus 170
Location:
Contained inside a huge shell near the Statue of the Seven by Marcotte Station. To open the shell, hit it.
Hydroculus 171
Location:
The oculi lies near the Statue of Seven by Marcotte Station. You can use the Humongous Hat Jellyfish near to bounce to it, then glide, or climb the tree.
Hydroculus 173
Location:
Can be found south of the Weeping Willow of the Lake waypoint, on a rock overlooking the massive tree.
Hydroculus 174
Location:
Ride the aircraft near the Fountain of Lucine at the foot of the mountain. After reaching the top of the mountain, utilize the hat jellyfish that has spawned to reach the oculi.
Hydroculus 176
Location:
Located south of the Weeping Willow of the Lake. Complete the Time Challenge to reveal and access the Hydroculus.
Hydroculus 177
Location:
The oculi are locked up behind bars. Simple vault keys 1, 2, and 3 are required to open. Key 1is in the bird's nest on top of the shipwreck; Key 2 is from the Treasure Hoarders' Chest on the deck; Key 3 is under the spot on the south side of the shipwreck.
Hydroculus 178
Location:
Situated on top of a cliff north of Lumidouce Harbor.
Hydroculus 181
Location:
Can be found near the fork east of the Foggy Forest Path. Take the octopus ability from the machine and use it to get rid of the 3 bacterial mats. The hydroculus will then spawn, and both jellyfish will be freed and moved into position.
Hydroculus 182
Location:
Follow the foggy forest trail south of the waypoint from the fountain. The oculi is located beneath the bridge with a treasure hoarder and may be acquired simply by going across the bridge.
Hydroculus 183
Location:
Placed inside the Pneumousia Storage Box; break it using the ousia orb nearby.
Hydroculus 184
Location:
The oculi can be found near the waypoint south of the Fountain of Lucine's southeast exit. Use the machine to obtain the ball octopus ability, then use its powers to push the hat jellyfish you can jump on.
Hydroculus 185
Location:
Near the waverider waypoint on the foggy forest path. Use the machine to gain the ability of xenochromatic octopus, then push the jellyfish to jump and glide.
Hydroculus 186
Location:
Located southeast of the "Rusty Rudder" boat. Swim underwater and use the jellyfish to jump up.
Hydroculus 187
Location:
The oculi is located in Lumidouce Harbor. Obtain the octopus ability, hit the floating crystal flowers to make them spin, then use the platforms generated to approach the jellyfish.
Hydroculus 188
Location:
Placed on the left crane near the Lumidouce Harbor waypoint.
Hydroculus 190
Location:
Located north of the Fort Charybdis Ruin. Take the two floating crystal and set them on the projector. Align the projector with the mirrors using the octopus ability.
Hydroculus 193
Location:
Located in Fort Charybdis Ruins. Complete the Time Challenge located in the area to summon a hydro ring. This will take you to the Hydroculus above.
Hydroculus 195
Location:
Located by the Morte Region Statue of the Seven, floating above the hole that leads to the ruins.
Hydroculus 199
Location:
Located northeast of the waypoint, north of Mount Automnequi's West Slopes. Simply utilize the jellyfish beneath it to obtain the oculi.
Hydroculus 200
Location:
Located near the waypoint, north of Mount Automnequi's West Slopes.
Hydroculus 204
Location:
Situated on top of a rock wall near the East Slopes of Mount Automnequi waypoint.
Hydroculus 207
Location:
Can be found on the huge tower in Morte Region. Enter the ring of water near the waypoint, which will take you almost to the top of the tower.
Hydroculus 210
Location:
Can be found south of the Fort Charybdis Ruin. To obtain the oculi, use the Jellyfish situated on top of the shattered building.
Hydroculus 215
Location:
Sits on a tiny mountain near a shipwreck southeast of Charybdis Waypoint.
Hydroculus 216
Location:
Located southeast of 215, near the map's boundary. Eliminate the hilichurls that are blocking the jellyfish, and then utilize it to fly up.

4.6 Surface Hydroculi Locations

4.6 Surface Hydroculi Locations

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Three of the surface Hydroculus in 4.6 are found around the Village of Petrichor, while the remaining six are found inside the Faded Castle. To gain access to the castle, travelers must play through the Canticles of Harmony quest.

✔️ Item How to Get
Hydroculus 217
Location:
Can be found on top of a house near the Teleport Waypoint in Petrichor. Simply climb the house and get it.
Hydroculus 218
Location:
Placed on top of the mountain in the village of Petrichor.
Hydroculus 219
Location:
Teleport to Petrichor's central Waypoint and head east. The Hydroculus can be found on a pillar behind a tree.
Hydroculus 220
Location:
Found behind the bookshelf in the faded castle. To open the bookshelf, solve the Mysterious Grimoires puzzle by returning the Lost Grimoire.
Hydroculus 221
Location:
Located underwater and between two statues near the teleport waypoint. You can simply dive to retrieve it.
Hydroculus 222
Location:
Located on the left side of the stage of the Faded Castle. Near some musical instruments.
Hydroculus 223
Location:
Can be found on the Middle Level of the Faded Castle, near the library and past a Praetorian Golem. Hit the crystal and use the moving platform and hydro ring to reach the top. Use the Lost Grimoire to activate the bookcase, then open it using the Ancient Symphony.
Hydroculus 224
Location:
Found on a ledge in the southern portion of the Faded Castle, on the route to the Exhibition Hall, where the Statue of Marble and Brass is placed.
Hydroculus 225
Location:
Located at the far end of the arena in the Exhibition Hall of Faded Castle. Climb one of the nearby pillars and jump from there to grab the Hydroculus.

Underwater Hydroculus Locations

All Fontaine Underwater Locations Map

Select an underwater section below!
4.0 Locations
Beryl Region
Belleau Region
Court of Fontaine
4.1 Locations
Liffey Region
Fontaine Research Institute
4.2 Locations
Erinnyes Forest
Morte Region
4.6 Locations
Sea of Bygone Eras
Tip: Use your browser's page search function to navigate the page by searching a Hydroculus number from the map!

4.0 Hydroculus in Fontaine's Underwater Area

4.0 Underwater Hydroculi Locations

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Hydroculus #50 at the Emperor of Fire and Iron Boss

 Mark as obtained

A Hydroculus is located inside the cave pathway leading down to the Emperor of Fire and Iron boss. You can find the entrance by toggling the layer map, and locating the orange mouth of a cave a little north to the boss icon.

Hydroculus #51 to #53 in the Boiling Water Puzzle

✔️ Item How to Get
Hydroculus 51
Location:
Can be found under a rock pile in the cave of the Iron Viscount mini-boss! To unlock this area, you will need to solve the Boiling Water puzzle in the Beryl Region, Fontaine.
See related guide on how to get it!
Hydroculus 52
Location:
Can be found on the way to the cave of the Iron Viscount mini-boss! To unlock this area, you will need to solve the Boiling Water puzzle in the Beryl Region, Fontaine.
Hydroculus 53
Location:
Located in the boiling water. To unlock this area, you will need to solve the Boiling Water Puzzle in the Beryl Region, Fontaine.
See related guide on how to get it!

How to Clear Out the Boiling Waters

Underwater Hydroculus #54 to #65

✔️ Item How to Get
Hydroculus 54
Location:
From the underwater teleport waypoint in Elton Trench, head straight down until you come across signs of shipwrecks, and follow it all the way to a cave. The Hydroculus will be on top of a shipwreck, surrounded by Treasure Hoarders.
Hydroculus 55
Location:
Located just between two cliffs near the Teleport Waypoint south of Elton Trench.
Hydroculus 56
Location:
Dive into the depths of the Elton Trench, down past shipwrecks and into the mouth of a cave where the Hydroculus is. This is on the way to Hydroculus #54.
Hydroculus 57
Location:
Located in an underwater room near the Elton Trench. Use the nearby pneuma block and attack the ousia posts to unlock.
See related guide on how to get it!
Hydroculus 58
Location:
On top of a giant, underwater lilypad with two Fontemer Aberrants circling it, on the northern side of the Elton Trench.
Hydroculus 59
Location:
Around north of the Elton Trench, behind a bounder you can destroy with a Crab Aberrant's ability.
Hydroculus 60
Location:
Located close to the surface north of the Elton Trench, right beside a pair of Bullet Barnacles.
Hydroculus 61
Location:
Found underwater in the cave leading to and from the south side of the underground Poisson village, in the Belleau region.
Hydroculus 62
Location:
Found on top of the giant ship on the north side of the underground Poisson village, in the Belleau region.
Hydroculus 63
Location:
The Hydroculus was guarded by the Fairy Knight twins, north of Salacia Plain.
Hydroculus 64
Location:
Can be found under the rock arch, in between the Elton Trench and Salacia Plain.
Hydroculus 65
Location:
In the small building ruin, you can find the Hydroculus, south of the Court of Fontaine in Salacia Plain.

Hydroculus #66, #67, #68, and #70 found in the Aqueous Tidemarks Quest

✔️ Item How to Get
Hydroculus 66
Location:
Located in an underwater area locked behind an Ancient Key in the ''Aqueous Tidemarks'' world quest. Break the Bullet Barnacle to get the Hydroculus.
Hydroculus 67
Location:
Located in an underwater area locked behind an Ancient Key in the ''Aqueous Tidemarks'' world quest. Found behind a door.
Hydroculus 68 Hydroculus 68
Location:
Located in an underwater area locked behind an Ancient Key in the ''Aqueous Tidemarks'' world quest. Found at the top of some steps.
Hydroculus 70 Hydroculus 70
Location:
Located in an underwater area locked behind an Ancient Key in the ''Aqueous Tidemarks'' world quest. Inside a small room guarded by rifthounds.

Four Hydroculi are located in an underwater area locked behind an Ancient Key, which can only be obtained through the ''Aqueous Tidemarks'' world quest!

Aqueous Tidemarks Quest Guide

Hydroculus #69 in a Cave in Salacia Plain

 Mark as obtained

Follow the path south of Salacia Plain into a cave and ride the current inside till you come across the Hydroculus under a small arc. There will be rows of Bullet Barnacles along the way so watch out!

Hydroculus #71 Inside a Locked Underwater Room

How to Unlock the Room in Salacia Plain
1
Take a Crab Abberant's ability
2
Use the ability on the two nearby Fantastic Floating Ball and Rings.
3
Finally, interact with the two machines in front of the room to unlock it.
 Mark as obtained

There is a Hydroculus inside a locked, underwater room in the Salacia Plain. Aside from the Hydroculus, this room will also contain a Treasure Chest!

Locked Underwater Dome Puzzle Guide

Underwater Hydroculus #72 to #76

✔️ Item How to Get
Hydroculus 72
Location:
Located under a rock arch north of Salacia Plain.
Hydroculus 73
Location:
Located at the center of a big underwater plant north of Salacia Plain.
Hydroculus 74
Location:
Located near the bottom of the ocean floor, under an archway of an underwater ruin to the right of the Court of Fontaine.
Hydroculus 75
Location:
Find 3 Seelies to unlock the big bubble in the Thalatta Submarine Canyon, just by the teleport waypoint
Hydroculus 76
Location:
Located north of the Chemin de L'Espoir, behind a broken wall at the top of a ruin entrance.

Hydroculus #77, #78, and #79 found in the Narzissenkreuz Adventure Quest

✔️ Item How to Get
Hydroculus 77
Location:
Pop the bubble and ride the Hydro ring up. Can be found in The Narzissenkreuz Adventure quest line.
Hydroculus 78
Location:
Can be found in The Narzissenkreuz Adventure quest line while solving a puzzle.
Hydroculus 79
Location:
Can be found in The Narzissenkreuz Adventure quest line, hit the device to summon steps that lead to the Hydroculus.

Three Hydroculi can be found in The Narzissenkreuz Adventure quest line. Check out our guide on this quest here:

The Narzissenkreuz Adventure Quest Guide

Underwater Hydroculus #80 to #82

✔️ Item How to Get
Hydroculus 80
Location:
Located northwest of the Elton Trench. Destroy the Bullet Barnacles around the area to reveal the Hydroculus.
Hydroculus 81
Location:
Located northwest of the Elton Trench, just by a teleport waypoint.
Hydroculus 82
Location:
Hidden under a stone in the waters of a lake north of the Statue of the Seven in the Elynas area.
See related guide on how to get it!

Hydroculus #83, #84, and #85 in A Brush of Seafoam and Crimson Quest

✔️ Item How to Get
Hydroculus 83
Location:
In the area known as ''A Lonely Place,'' on top of a slanted structure, found in the A Brush of Seafoam and Crimson quest line.
Hydroculus 84
Location:
On top of a small rock pile in the Merusea Village, found in the A Brush of Seafoam and Crimson quest line.
Hydroculus 85
Location:
Northwest of ''A Very Bright Place'' on top of a pink house, found in the A Brush of Seafoam and Crimson quest line.

Merusea Village has 3 Hydroculi, which can be unlocked through the Brush of Seafoam and Crimson quest line. Check out our guide on this quest here:

A Brush of Seafoam and Crimson Quest Guide

4.1 Underwater Hydroculus

4.1 Underwater Hydroculi Locations

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Tip: Use your browser's page search function to navigate the page by searching a Lunoculus number from the map!

Hydroculus #129 and #130

✔️ Item How to Get
Hydroculus 129
Location:
Located south of the Teleport Waypoint, hidden behind a boulder. To obtain it, use the Xenochromatic Jellyfish's ability to destroy the boulder at the bottom of the lake.
Hydroculus 130
Location:
Can be found in the lake to the right of the Fontaine Research Institute's Statue of the Seven. Dive into the lake, pass through the tunnel, and continue down the road until you reach a big cavern. The Hydroculus can be seen in some ruins to the left.

Hydroculus #131 Locked in Bravais' Secret Study

 Mark as obtained

Found in an underground cave east of the Experimental Field Generator. Collect all Mysterious Ores and create Arkhium Lumenite in the Forging Press under Submerged Stony Path to get access to the cave.

Hydroculus #132 to #146

✔️ Item How to Get
Hydroculus 132
Location:
Can be found in an underwater ruin northeast of the Fontaine Research Institute Statue of the Seven. To open the ruin's gate, activate the Echoing Conch nearby and then use the Blubberbeast Ability.
Hydroculus 133
Location:
Located slightly east of the underwater Teleport Waypoint, on top of a shattered pillar with an arch.
Hydroculus 134
Location:
Located underwater amongst a shattered pillar, just west of the underwater Teleport Waypoint.
Hydroculus 135
Location:
Located west of the Fontaine Research Institute Statue in a submerged tower. Swim to the bottom of the tower and destroy the Deepwater Assault Mek guarding the mechanism. Hit the mechanism once, then enter the tower to obtain the Hydroculus.
Hydroculus 136
Location:
Located underwater, northeast of the Liffey Region Statue of the Seven, between three large coral platforms.
Hydroculus 137
Location:
Located in Mont Esus East near the entrance to an underwater cave. Simply dive below and head to the cave entrance to find the Hydroculus.
Hydroculus 138
Location:
Can be found deep below the underwater tunnel from #137. Simply swim deep into the tunnel and you should be able to see it on the far left side.
Hydroculus 139
Location:
Located near the entrance of a metal shaft underwater, just below a large metal pipe structure.
Hydroculus 140
Location:
Located immediately south of the underwater Teleport Waypoint, on top of one of the pipe metal structures.
Hydroculus 141
Location:
Located on top of the Fortress of Meropide.
Hydroculus 142
Location:
Located underwater north of Meropide's Fortress, at the entrance of the cave leading to the Millennial Pearl Seahorse.
Hydroculus 143
Location:
Located north of the Fortress of Meropide, floating above seaweed and just past a cave entrance.
Hydroculus 144
Location:
Can be found in a pool at the far end of the Millennial Pearl Seahorse boss arena from the Teleport Waypoint.
Hydroculus 145
Location:
Obtainable after completing Unfinished Comedy sub-quest: An Eye for an Eye. After finishing the subquest, return to the map location and get the Hydroculus.
Hydroculus 146
Location:
Follow the underwater tunnel from Hydroculus #144 until you get to the other end where a Hydroculus is floating above the water.

Hydroculus #147 in the Submerged Stony Path

 Mark as obtained

Find the trail heading north from the Teleport Waypoint near Hydroculus #146 and dive into the water. Open the gate with the Xenochromatic Jellyfish ability, then go inside and use the ability to hit the crystal from a distance to open the next gate. Continue along the trail until you reach the Hydroculus.

Hydroculus #148 and #150

✔️ Item How to Get
Hydroculus 148
Location:
Can be found on top of a massive fan inside Kuisel's Clockwork Workshop. Just climb a nearby ladder and glide towards it.
Hydroculus 150
Location:
To unlock the Terminal, defeat the Clockwork Meka and interact with it to open the gate. Continue south and descend to the lower east levels of the enormous room, where the Hydroculus is located.

4.2 Underwater Hydroculus

✔️ Item How to Get
Hydroculus 158
Location:
On the north side underwater of weeping willow, destroy the red meanies to open up the path leading to the Hydroculus.
Hydroculus 162
Location:
Located east of the Weeping Willow of the Lake. Enter on the east side of the willow tree. You will see a cannon guarded by two Hilichurls. Use it to break the wall to reveal the Hydroculus.
Hydroculus 168
Location:
Located inside an alcove found underneath an underwater path in Erinnyes. This path is accessible after cleansing the Root-Consuming Tumor during the Wild Fairy of Erinnyes quest.
Hydroculus 172
Location:
Located inside the submerged cavern in Erinnyes. This cavern is accessible during the final quest of the Wild Fairy of Erinnyes.
Hydroculus 175
Location:
Can be found beneath the tiny lake south of the Weeping Willow of the Lake waypoint; simply hit the shell to get the oculi inside.
Hydroculus 179
Location:
Complete the puzzle/question at the rusty rudder to use the cannon and break the wall. Answers; 3 tables, 3 employees, Romaritime Flower
Hydroculus 180
Location:
Can be found on a small pool of water underground.
Hydroculus 189
Location:
Found within a sunken ship north of the Fort Charybdis ruin waypoint.
Hydroculus 191
Location:
Located in Fort Charybdis Ruins, floating above the golden gears. Climb one of the gears to your left. Reaching the top of the nearby shaft will summon a wind that will take you to the Hydroculus.
Hydroculus 192
Location:
Similiar location to Hydroculus 191. Solve the Seelie puzzle to open up the underwater section of the area.
Hydroculus 194
Location:
Located underwater just by the Morte Region Statue of the Seven. The Hydroculus is located inside the ruins where a Bubbler Seahorse resides.
Hydroculus 196
Location:
Can be found during the Search in the Algae Sea quest; in the same room as Hydroculus #197 but behind a large mechanism on the far side.
Hydroculus 197
Location:
Can be found during the Search in the Algae Sea quest; follow the path on the right side of the underwater teleport waypoint.
Hydroculus 198
Location:
Can be found during the Search in the Algae Sea quest. Locked behind a red barrier, but you can reach it through the doorway by the nearest teleport waypoint.
Hydroculus 201
Location:
Found during the Cupid's Lover seal. Once inside the Orthant's chamber, go deep into the room where the piece is situated. There should be a looking glass inside. Use it to teleport within a corridor, carrying the Hydroculus and the special key.
Hydroculus 202
Location:
Located at the entrance of the underground area in the East Slopes of Mont Automnequi.
Hydroculus 203
Location:
Can be found underwater in ruins south of the Morte Region. You can simply swim up to it.
Hydroculus 205
Location:
Located on an underwater arch north of the East Slopes of Mount Automnequi.
Hydroculus 206
Location:
Located underwater, east of the East Slopes of Mont Automnequi teleport waypoint.
Hydroculus 208
Location:
Can be found underwater to the north of the tower waypoint. Hydroculus can be obtained by destroying the massive rock.
Hydroculus 209
Location:
Can be found just to the left of the surface waypoint of the Fort Charybdis Ruins.
Hydroculus 211
Location:
Located by the west entrance of Fort Charybdis Ruins. The Hydroculus will be close by the shore.
Hydroculus 212
Location:
Located underwater south of the west entrance of the Fort Charybdis Ruins. The Hydroculus is floating under a ruined underwater bridge.
Hydroculus 213
Location:
Can be found beneath an underwater cliff southwest of the Fort Charybdis Ruins, near a seaweed clump.
Hydroculus 214
Location:
Located floating above the east entrance of Fort Charybdis Ruins.

4.6 Sea of Bygone Eras Hydroculus

4.6 Underwater Hydroculi Locations

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The majority of the underwater hydroculus in 4.6 can be found within the Sea of Bygone Eras. Unlocking these areas require travelers to complete parts of the Canticles of Harmony quest in order to gain access.

✔️ Item How to Get
Hydroculus 226
Location:
Found directly beneath the Teleport Waypoint, inside a tiny cavern in the Path of the Ocean Pillars.
Hydroculus 227
Location:
Located on top of the first Nameless Stone Statue in the Caesareum Palace Cave. It should be at the tip of the blade.
Hydroculus 228
Location:
Located on top of the blazing door in the center of the Caesareum Palace.
Hydroculus 229
Location:
Hidden behind breakable rocks inside the Caesareum Palace.
Hydroculus 230
Location:
Located at the entrance of the Caesareum Palace Cave, which lies near the sea floor, past a big, bright, pink coral with blue seaweed coming out of it.
Hydroculus 231
Location:
Located south of Initium Iani, inside a crevice near the Recovery Orb fish.
Hydroculus 232
Location:
Found on top of a broken golem statue in Porticus Anticus.
Hydroculus 233
Location:
Found inside the big bell in Portus Anticus. Use the Aqua Current to easily get to the Hydroculus.
Hydroculus 234
Location:
Located north of Initium Iani on the higher part of the stone tower.
Hydroculus 235
Location:
Found on the lower level of Portus Anticus, on top of a Golem Statue near some blue corals.
Hydroculus 236
Location:
Located on top of a cliff, with a line of floating rocks nearby.
Hydroculus 237
Location:
Located on top of the Stone Pillar west of the waypoint, surrounded by huge pink mushrooms.
Hydroculus 238
Location:
Located near the Teleport Waypoint in Initium Iani, beneath some blue corals.
Hydroculus 239
Location:
Found on top of a stone pillar in Initium Iani.
Hydroculus 240
Location:
Found underneath the giant yellow plant in Initium Iani.
Hydroculus 241
Location:
Found inside a square crevice with a blue green coral inside.
Hydroculus 242
Location:
Found at the top of the cliff south of Initium Iani. Located near the enormous blue seaweed.
Hydroculus 243
Location:
Located between two stone pillars in the Sea of Bygone Eras.
Hydroculus 244
Location:
Found on top of a giant pink mushroom in Sea of the Bygone Eras.
Hydroculus 245
Location:
Located north of Hortus Euergetis, behind a crevice behind a massive glowing flower.
Hydroculus 246
Location:
Located north of Alta Semita near the waypoint, on top of a small stone pillar.
Hydroculus 247
Location:
Found on top of a cliff near Alta Semita, next to a large plant.
Hydroculus 248
Location:
Found within a clam on top of a pink mushroom south of Alta Semita, near the waypoint.
Hydroculus 249
Location:
Located south-west of Clivus Capitolinus, near the broken bridge. You can find the Hydroculus on top of the huge orange mushrooms.
Hydroculus 250
Location:
Can be found on top of blue corals surrounded by Fontemer Aberrants in Collegium Phonascorum.
Hydroculus 251
Location:
Located between metal pillars inside the Collegium Phonascorum.
Hydroculus 252
Location:
Found in Collegium Phonascorum, surrounded by a force field and guarded by two Aurum Angelfish.
Hydroculus 253
Location:
Can be found on top of a broken pipe between Alta Semita and Collegium Phonascorum.
Hydroculus 254
Location:
Found within a damaged pipe in the center of Alta Semita.
Hydroculus 255
Location:
Found under a breakable rock pile at the very bottom of alta semita; smash the boulders using the nearby fontemer crab.
Hydroculus 256
Location:
Can be seen north of Alta Semita, on top of a stone pillar next to a large plant.
Hydroculus 257
Location:
Located behind a breakable rock. You can get the ability from the Aberrant nearby and use it to destroy the rock.
Hydroculus 258
Location:
Located north of Alta Semita on a small stone platform over the bridge.
Hydroculus 259
Location:
Found north of Alta Semita, between two Allochromatic Anemones under the bridge.
Hydroculus 260
Location:
Located north of Clivus Capitolinus, inside a large clam on a pink mushroom attached to the pillar.
Hydroculus 261
Location:
Can be found near the end of the bridge leading to the Clivus Capitolinus entrance.
Hydroculus 262
Location:
Found east of Alta Semita on top of a Washer Octopus, which is near three Allochromatic Anemones.
Hydroculus 263
Location:
Located east of Collegium Phonascorum, on top of a large blue plant.
Hydroculus 264
Location:
Located south of Clivus Capitolinus, atop the smaller stone pillar on the huge pink mushroom.
Hydroculus 265
Location:
Located south of Clivus Capitolinus, beside a treasure chest guarded by a Fontemer Crab.
Hydroculus 266
Location:
Located south of Clivus Capitolinus, between the broken pillars near the teleport waypoint.
Hydroculus 267
Location:
Located south-east of Clivus Capitolinus, inside a breakable rock. You can use the Aberrant Crab's abilities to destroy the rock.
Hydroculus 268
Location:
Located on top of a tall, shattered pillar in the cave beneath the Clivus Capitolinus, in the same place as the Local Legend, Cineas.
Hydroculus 269
Location:
located inside the narrow opening on the top of the Clivus Capitolinus Building.
Hydroculus 270
Location:
Use the elevator within the Domus Aurea after defeating the boss in the Fortune Plango Vulnera quest.
Hydroculus 271
Location:
Located on the stairs inside the Doumus Aurea. To access the location, complete the final part of the Canticles of Harmony Quest Chain.

How to Use Hydroculus

Upgrade Fontaine's Statue of the Seven

Genshin - Use Hydroculus on the Statue of the Seven in Fontaine
Like all other oculi, the Hydroculus is used to upgrade the Statue of the Seven in Fontaine! Upgrading the Statue of the Seven rewards you with Primogems, Shrine of Depths Keys, and Adventure EXP.

How to Level Up Statues of the Seven

How Many Hydroculus are There in 4.6?

There are 271 Hydroculus total found in the Fontaine region as of Version 4.6, meaning you can upgrade the Statue of the Seven in Fontaine up to its maximum level 10! You may also have 1 Hydroculus left over in your bag afterwards.

Search with Friends

If you're finding it hard to explore the various areas of Fontaine, bring a friend or two to help you! Check out our friend request and co-op boards for potential exploration buddies:

Genshin Co-Op Boards
Genshin - Friend Request BoardFriend Request Board Genshin - Co-Op BoardCo-Op Board Genshin - Supporting castBoardSupporting Cast Board

Rewards from Fontaine Statue of the Seven

Lvl. Hydroculus Required Rewards
2 20
Mora Mora x800
3 22
Mora Mora x1200
4 25
Mora Mora x1600
5 28
Mora Mora x2000
6 30
Mora Mora x2400
7 32
Mora Mora x2800
8 35
Mora Mora x3200
9 38
Mora Mora x3600
10 40
Mora Mora x4000

Note that players who have not reached Adventure Rank 60 can still gain Adventure EXP instead of Mora from the Statue of the Seven.

Tips on Finding Hydroculus

Use Resonance Stone Gadget to Detect Missing Hydroculus

Genshin - Hydroculus Resonance Stone Detection Range
Above shows the range of the Hydroculus Resonance Stone, which works similar to all the other Resonance Stones in the game.

Players can use the Hydroculus Resonance Stone to help collect Hydroculus! After crafting a Hydroculus Resonance Stone, go to your Inventory and select to use it. The map will then pull up and show you an approximate area where a Hydroculus is located.

Get from Fontaine Reputation System

You can get the crafting recipe for the Hydroculus Resonance Stone once you reach Reputation Level 8 in the Fontaine Reputation System.

Oculus Resonance Stone Guide

Genshin Impact Related Guides

Genshin Impact - Areas and Map Guides

All Interactive Map Guides

Map Guides for Teyvat Nations

List of Region Map Guides
Genshin - Mondstadt Map Guide SlimMondstadt Map Guide Genshin Impact - Liyue Map Guide SlimLiyue Map Guide
Genshin - Inazuma Map Guide SlimInazuma Map Guide Genshin Impact - Sumeru Region SlimSumeru Map Guide
Genshin Impact - Fontaine Region Slim Fontaine Map Guide Genshin - Natlan Region Map Guide Natlan Map Guide

All Nations and Regions

Map Guides for Other Areas

List of Map Guides
Genshin Impact - Enkanomiya Map GuideEnkanomiya Genshin Impact - Archipelago Map GuideGolden Archipelago
Genshin Impact - Dragonspine Map GuideDragonspine Genshin Impact - The Chasm Map GuideThe Chasm
Genshin - Rainforest AreaSumeru Rainforest Genshin - Desert AreaSumeru Desert
Genshin Impact Veluriyam MirageVeluriyam Mirage Genshin Impact Chenyu ValeChenyu Vale
Genshin Impact Simulanka SlimSimulanka Genshin Impact - Sacred Mountain and Sanctified LandSacred City of Tollan
Genshin Impact - Nod-Krai Nod-Krai City Genshin - Easybreeze Holiday ResortEasybreeze Holiday Resort

Oculi Location Guides

Teyvat Oculus Guides
Genshin - All OculiAll Oculi Genshin - AnemoculusAnemoculus Genshin - Geoculus GuideGeoculus Genshin - Electrocolus GuideElectroculus
Genshin - DendroculusDendroculus Genshin - HydroculusHydroculus Gesnhin - PyroculusPyroculus Genshin - LunoculusLunoculus

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Dendroculus Guides
Rainforest Dendroculus All Desert Dendroculus
Hadramaveth Dendroculus Girdle of the Sands Dendroculus

Comment

33 Anonymous Anonymous 28 days

where is #168? i just finished the wild fairy in errinyes quest and whenever i go to the spot, its not to be seen in the cave, help!

32 jey jey 7 months

i have checked every.single.spot…twice. i’m still missing one. help i’m going insane

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