How to FishGAME FIELD GUIDE
BOSS LAB / Volcano

How to beat Mutated Bowhead Whale

Use Bowhead Whale on Volcano. Use the crater rim for spacing, then hand the fin to the hazmat NPC at the military boat.

Community compile / tactics may change. Boss bait and tactics are compiled from Steam achievement context and linked community walkthroughs. Last checked August 2026. Read the sourcing policy.
Mutated Bowhead Whale encounter in How to Fish
Mutated Bowhead Whale / VolcanoCommunity compile / tactics may change
Practical answer first

Throw the Bowhead Whale body into the volcano. Use the crater rim for spacing, then hand the fin to the hazmat NPC at the military boat.

LocationVolcano
Required baitBowhead Whale
Reward / hand-inEnding boat; We are so back

How to summon

Throw the Bowhead Whale body into the volcano.

Attacks and stun windows

Community reports vary; use the source-linked guide for current tactics.

Solo plan

Keep recovery food and do not sell the fin.

Co-op plan

Rotate aggro and leave one player free for the hand-in run.

RELATIONSHIP GRAPH

Connected field notes

VolcanoISLANDBowhead WhaleBAITFull fight write-upGUIDEBoss labDATABASEI'm stuckHELP