This is a hunting guide for Somnacanth, a Large Monster in Monster Hunter Rise (MH Rise) and the Sunbreak DLC. Read on to learn Somnacanth's weaknesses, forgeable weapons and armor, drops, and attack patterns for Master Rank!

Somnacanth Guide	Aurora Somnacanth Guide
Somnacanth Weapons	Somnacanth Armor

Somnacanth Weakness and Notes

Somnacanth イソネミクニ
Type		Leviathan
Threat Level	5/10	Rampage Type	ー
Major Weakness	Thunder	Other Weakness	Fire
Blight / Elemental Damage	Water	Abnormal Status	Sleep
Characteristics
A formidable aquatic serpent that crests on moonlit nights--likely why it has often been mistaken for a mermaid. It expels an intoxicating sleep powder from its neck gills and tail, knocking out prey before it can resist. Some Somnacanth sightings tell of this species making use of unusual shells, so exercise caution if catch one swimming towards you with a shell in its claws.

How to Unlock Somnacanth

Complete Scarlet Tengu in the Shrine Ruins in Master Rank

Quest Name	Monster/Unlock
Somnacanth Sleep Aid (Key Quest)	Somnacanth
	Unlock Conditions: Finish the Quest "Scarlet Tengu in the Shrine Ruins"

MR Somnacanth is unlocked by completing the Urgent Quest Scarlet Tengu in the Shrine Ruins and reaching MR 2 in the Sunbreak expansion.

MR Grinding Guide:
How to Get from MR 6 to MR 100 Fast

Complete A Bewitching Dance in High Rank

Quest Name	Monster/Unlock
A Somniferous Elegy (Key Quest)	Somnacanth
	Unlock Conditions: Finish the Quest "A Bewitching Dance"

High Rank Somnacanth is unlocked by completing the Urgent Quest A Bewitching Dance and reaching HR 6.

Hunter Rank Farm Guide:
How to Get from HR 7 to HR 100 Fast

Reach HR 3 in Low Rank

Quest Name	Monster/Unlock
Beckoning Slumber (Key Quest)	Somnacanth
	Unlock Conditions: Clear ★5 Village Special License Test 2

Low Rank Somnacanth is unlocked by completing the ★5 Village Special License Test 2 and reaching HR 3.

Somnacanth Weakness and Resistance

45	45	32	10
0	21	0	0

Bold are the recommended Weapon Type and Elemental Damage.

Somnacanth Weapon Damage Breakdown

Part
Head	65	55	45
Head Fin	40	40	20
Neck	70	70	60
Foreleg	45	45	35
Abdomen	30	40	20
Back	25	25	15
Hind Leg	25	30	25
Tail	60	55	35
Overall	45	45	32

Somnacanth Elemental Weakness Breakdown

Part
Head	15	0	25	0	0
Head Fin	0	0	15	0	0
Neck	15	0	25	0	0
Foreleg	5	0	15	0	0
Abdomen	10	0	15	0	0
Back	10	0	15	0	0
Hind Leg	10	0	25	0	0
Tail	15	0	30	0	0
Overall	10	0	21	0	0

Higher numbers indicate higher potential damage to the monster.

Somnacanth Hunting Tips

While in the water, it can move about as it pleases, but it doesn't fare so well on land. Draw it out to the shore for an easy hunt. If you're caught in a cloud of its sleep powder, it's lights out; use Wirebug to leap away from it and position for a counter attack.

Status Effect Vulnerabilities

If an ailment has more stars it means that it has better effectiveness.

Item Vulnerabilities

◯ = Vulnerable; ✕ = Fully Resistant; ▲ = Situational

Kinsect Extracts

Monster Part	Extract
Head
Head Fin
Neck
Foreleg
Abdomen
Back
Hind Leg
Tail

Red = Attack Increase, White = Movement Boost, Orange = Anti-knockback When Attacking

Kinsect Extract Guide

Somnacanth Locations and Quests

Somnacanth Known Habitat

Map	Starting Area	Visited Areas	Rest Area
Frost Islands	8	5 / 7 / 8 / 10 / 11 / 12	10
Flooded Forest	6	1 / 2 / 3 / 4 / 5 / 6 / 7 / 14	14
Lava Caverns	2	2 / 3 / 6 / 7 / 8 / 9 / 10 / 11	6
Infernal Springs	-	-	-

Somnacanth Quest Appearances

How to Beat Somnacanth

Somnacanth Tips
Bring Energy Drinks and Deodorant Keep Somnacanth Out of the Water Stay Behind Somnacanth Use Sonic Bombs to Interrupt Somnacanth

Bring Energy Drinks and Deodorant

Somnacanth inflicts Sleep with its gaseous breath and can also cause Blastblight with its Shell Attacks. Negate these potentially deadly effects by bringing Energy Drinks and Deodorant!

Investing in Sleep Resistance is also worth considering when hunting Somnacanth.

Keep Somnacanth Out of the Water

Some of Somnacanth's attacks only occur when it swims belly up in water. Its Shell Attacks and Breath Attacks in this state can easily disable hunters for a few seconds, allowing Somnacanth to deal easy damage.

To prevent Somnacanth from using these attacks, lure it to land using a Stinkmink or Wyvern Ride the monster towards dry areas.

Stay Behind Somnacanth

Somnacanth often leaves its rear exposed whenever it stands upright on its tail for Slam Attacks or Breath Attacks. Stick close to its back whenever it performs these attacks to avoid getting hit and take advantage of the opening to deal massive damage to Somnacanth.

Use Sonic Bombs to Interrupt Somnacanth

When Somnacanth begins channeling its Sleeping Mist Nova, you can prevent it from occurring by throwing Sonic Bombs toward its face. Doing this leaves it vulnerable for a short while and allows you to continue your offense against Somnacanth.

Somnacanth Master Rank Attack Patterns

In addition to its attacks in Low and High Rank quests, Somnacanth uses the following new attack in Master Rank.

Quick Sweeping Sleep Breath

Quick Sweeping Sleep Breath Attack Information
Quick Sweeping Sleep Breath: Somnacanth rears its head back before quickly sweeping its sleep breath across the ground, causing a sleeping mist to linger in front of it. This attack covers a wide area in front of Somnacanth, so be mindful of your positioning when moving past the sleeping mist.

Somnacanth General Attack Patterns

Somnacanth uses the following attacks in Low and High Rank quests.

Sleeping Breath Attacks

Somnacanth has a variety of breath attacks that inflict Sleep on contact.

Sleeping Breath Attack Variations
Frontal Sleep Breath: Somnacanth spews its sleeping breath in a straight line forward. You can easily avoid this attack by running or evading perpendicular to Somnacanth's head before it comes out.
Sweeping Sleep Breath: Somnacanth lets out its sleeping breath toward its left or right side before slowly sweeping it across to the other side. Somnacanth holds the sleeping breath in its initial direction for a short period before sweeping it across, so take this time to move behind Somnacanth to avoid getting hit.
Circular Sleeping Mist: While laying on its back, Somnacanth rapidly lets out sleeping mist as it circles the player, trapping them in a sleep-inducing ring. It often follows this attack up with a Red Shell Explosion that inflicts Blastblight. Avoid being caught in this attack by Wiredashing away before Somnacanth envelops you or by Wiredashing upward and outside the ring.
Retreating Sleeping Mist: While laying on its back, Somnacanth rapidly lets out sleeping mist as it retreats from the player. It often follows this attack up with a Yellow Shell Explosion that blinds the hunter. Carefully manuever through or away from the lingering mist to avoid being inflicted with Sleep.

Body Slam Attacks

Somnacanth often leaps up from the ground to slam its body on top of the hunter, dealing heavy damage on impact.

Body Slam Attack Variations
Clapping Body Slam: Somnacanth claps its forelegs thrice before slamming its body on top of the hunter, dealing moderate damage and knocking them away on impact. This attack has the shortest reach among all of Somnacanth's body slams.
Leaping Body Slam: Somnacanth takes two strides forward before leaping into the air and slamming its body on top of the hunter. The initial strides do not deal any damage on contact, so take the time to reposition away from the path of the body slam to avoid getting hit.
Wild Front Flip: Somnacanth wildly spins around on its tail before rapidly flipping forwards to slam its body on top of the hunter. This attack comes out quickly and covers a surprising amount of distance, so prepare to dodge at the last moment or dive-evade to avoid getting hit.
Whirling Body Slam: Somnacanth whirls through the air, forcefully slamming its body on top of the hunter as it lands and dealing heavy damage on impact. Despite coming from a relatively stationary stance, this attack can cover a long distance so prepare to evade this attack even when far away from Somnacanth.

Sweeping Attacks

Somnacanth can use its forelegs or massive head fin to perform sweeping attacks that knock away any hunters that get too close.

Sweeping Attack Variations
Foreleg Sweep: Somnacanth quickly sweeps one of its forelegs across the ground, reaching a wide area in front of it. While this attack deals light damage on contact, Somnacanth usually follows it up with another foreleg sweep or one of its other attacks, so prepare to evade again when this attack occurs.
Head Fin Sweep: Somnacanth rears its head backward before sweeping its massive head fin across the ground, knocking away any hunter in front of it and dealing moderate damage on impact. This attack leaves Somnacanth vulnerable for a few seconds, so quickly close the distance after it occurs to take advantage of this opening.

Shell Attacks

Somnacanth occasionally swims around on its back and picks up shells from beneath the water. The monster breaks these shells open after picking them up, causing explosions that inflict different status effects depending on the color of the shell.

Shell Attack Variations
Red Shell Explosion: Somnacanth breaks a red shell open, causing a large explosion that deals heavy damage and inflicts Blastblight.
Yellow Shell Explosion: Somnacanth breaks a yellow shell open, causing a large conic blast of light that inflicts blindness.

Forward Rush

Forward Rush Attack Information
Forward Rush: Somnacanth rapidly rushes forward with a quick lunge, knocking away hunters on contact as it repositions to a different location. This attack turns Somnacanth's entire body into a hitbox, so stay away from its body until the move finishes to avoid getting hit.

Twin Swipes

Twin Swipes Attack Information
Twin Swipes: Somnacanth lunges forward with two quick foreleg swipes, dealing light damage on hit. You can easily avoid this attack by moving away from Somnacanth's front as it moves forward.

Fin Barrage

Fin Barrage Attack Information
Fin Barrage: Somnacanth whips its head around, flinging a barrage of its sharp head fins towards the hunter. These fins linger on the ground, dealing moderate damage and causing hunters to trip on contact.

Sleeping Mist Nova

Sleeping Mist Nova Attack Information
Sleeping Mist Nova: Somnacanth stands upright and begins singing, channeling sleeping mist within its tail. After its performance, Somnacanth lets out a massive sleeping nova, inflicting Sleep on any hunters caught in its path. To avoid this attack, Wiredash above the sleeping mist and close the distance with Somnacanth.

Somnacanth Materials and Drops

Master Rank Somnacanth Materials

Target

Capture

Broken Parts

Carves

Somnacanth Cortex [33%] Somna Dream Powder [23%] Somnacanth Shard [21%] Somnacanth Wild Fin [14%] Monster Toughbone [7%] Large Wyvern Gem [2%]

Somnacanth Cortex [29%] Somnacanth Dreamtalon [26%] Somnacanth Shard [21%] Monster Toughbone [14%] Somna Dream Powder [12%] Large Wyvern Gem [3%]

Somnacanth Shard [97% (Tail)] Somnacanth Wild Fin [80% (Fins)] Somnacanth Dreamtalon [80% (Arms)] Afflicted Shell [40% (Anomaly Quests)] Afflicted Carapace [40% (Anomaly Investigations)] Afflicted Cortex [40% (Anomaly Investigations)] Somna Dream Powder [17% (Fins)] Large Wyvern Gem [3% (Tail), 3% (Fins)]

Somnacanth Shard [43% (Body)] Afflicted Shell [40% (Anomaly Quests)] Afflicted Carapace [40% (Anomaly Investigations)] Afflicted Cortex [40% (Anomaly Investigations)] Somnacanth Cortex [32% (Body)] Somna Dream Powder [14% (Body)] Somnacanth Wild Fin [10% (Body)] Large Wyvern Gem [1% (Body)]

High Rank Somnacanth Materials

Target

Capture

Broken Parts

Carves

Somnacanth Shell+ [33%] Somnacanth Sedative [23%] Somnacanth Scale+ [21%] Somnacanth Fin+ [14%] Monster Hardbone [7%] Wyvern Gem [2%]

Somnacanth Shell+ [29%] Somnacanth Claw+ [26%] Somnacanth Scale+ [16%] Monster Hardbone [14% (x2)] Somnacanth Sedative [12% (x2)] Wyvern Gem [3%]

Somnacanth Fin+ [80% (Head Fin)] Somnacanth Claw+ [80% (Arm x2)] Somnacanth Scale+ [20% (Arm), 97% (Tail)] Somnacanth Sedative [17% (Head Fin)] Wyvern Gem [3% (Head Fin), 3% (Tail)]

Somnacanth Scale+ [43% (Body)] Somnacanth Shell+ [32% (Body)] Somnacanth Sedative [14% (Body)] Somnacanth Fin+ [10% (Body)] Wyvern Gem [1% (Body)]

Low Rank Somnacanth Materials

Target

Capture

Broken Parts

Carves

Somnacanth Shell [34%] Somnacanth Dust [23%] Somnacanth Scale [21%] Somnacanth Fin [14%] Monster Bone L [8%]

Somnacanth Dust [30%, 12% (x2)] Somnacanth Claw [27%] Somnacanth Scale [17%] Monster Bone L [14%]

Somnacanth Claw [80% (Arm x2)] Somnacanth Fin [80% (Head Fin)] Somnacanth Dust [20% (Head Fin)] Somnacanth Scale [20% (Arm), 100% (Tail)]

Somnacanth Scale [43% (Body)] Somnacanth Shell [33% (Body)] Somnacanth Dust [14% (Body)] Somnacanth Fin [10% (Body)]

Somnacanth Dropped Materials

Master Rank

High Rank

Low Rank

Somnacanth Shard [50%] Somna Dream Powder [39%] Large Wyvern Tear [35%] Wyvern Tear [15%] Large Wyvern Gem [1%]

Somnacanth Scale+ [50%] Somnacanth Sedative [39%, 35% (x2)] Large Wyvern Tear [30%] Wyvern Tear [20%] Somnacanth Claw+ [10%, 15%] Wyvern Gem [1%]

Wyvern Tear [50%] Somnacanth Scale [50%] Somnacanth Dust [40%, 35% (x2)] Somnacanth Claw [10%, 15%]

Related Guides

All Monster Guides

All Somnacanth Guides

All Somnacanth Related Articles
Somnacanth Guide	Somnacanth Weapons	Somnacanth Armor

Sunbreak Monsters

Large Monsters

Sunbreak Large Monsters
Daimyo Hermitaur	Blood Orange Bishaten	Garangolm	Aurora Somnacanth
Shogun Ceanataur	Lunagaron	Astalos	Seregios
Magma Almudron	Gore Magala	Espinas	Pyre Rakna-Kadaki
Malzeno	Shagaru Magala

MR6+ Large Monsters

MR6+ Monsters
Gaismagorm (MR6)	Furious Rajang (MR50)	Scorned Magnamalo (MR100)

Title Update 1 Monsters

Sunbreak Title Update 1 Monsters
Seething Bazelgeuse	Silver Rathalos	Gold Rathian	Lucent Nargacuga

Title Update 2 Monsters

Sunbreak Title Update 2 Monsters
Flaming Espinas	Risen Chameleos	Violet Mizutsune

Title Update 3 Monsters

Sunbreak Title Update 3 Monsters
Chaotic Gore Magala	Risen Kushala Daora	Risen Teostra

Title Update 4 Monsters

Sunbreak Title Update 4 Monsters
Velkhana	Risen Crimson Glow Valstrax

Title Update 5 Monsters

Sunbreak Title Update 5 Monsters
Amatsu	Risen Shagaru Magala

Small Monsters

Sunbreak Small Monsters
Boggi	Ceanataur	Gowngoat
Hermitaur	Hornetaur	Pyrantula
Vespoid	Velociprey

Other Large Monsters

Other Large Monsters
Great Izuchi	Arzuros	Great Baggi	Lagombi
Aknosom	Tetranadon	Kulu-Ya-Ku	Barroth
Great Wroggi	Royal Ludroth	Khezu	Bishaten
Somnacanth	Barioth	Rathian	Tobi-Kadachi
Volvidon	Basarios	Pukei-Pukei	Magnamalo
Nargacuga	Zinogre	Anjanath	Mizutsune
Rathalos	Almudron	Goss Harag	Tigrex
Diablos	Jyuratodus	Rajang	Rakna-Kadaki
Bazelgeuse

Elder Dragons

Elder Dragons
Narwa the Allmother
Wind Serpent Ibushi	Thunder Serpent Narwa	Crimson Glow Valstrax
Chameleos	Kushala Daora	Teostra

Apex Monsters

Apex Monsters
Apex Arzuros	Apex Rathian	Apex Mizutsune
Apex Rathalos	Apex Diablos	Apex Zinogre

Other Small Monsters

Small Monsters
Altaroth	Anteka	Baggi	Bnahabra
Bombadgy	Bullfango	Delex	Felyne
Gajau	Gargwa	Izuchi	Jaggi
Jaggia	Jagras	Kelbi	Kestodon
Ludroth	Melynx	Popo	Rachnoid
Remobra	Rhenoplos	Slagtoth	Uroktor
Wroggi	Zamite

Small Monsters