Immediate route answer
Unlock, objective, exit
Unlock: Return the Albatross head and follow the pink Radar marker.
Main objective: defeat Mutated Bowhead Whale. Defeat the mutated whale chain and complete the ending transport sequence.
Stage 5 of 5 · How to Fish Steam
How to Fish game: Volcano Island guide
The final island combines Scientific-tier farming, military and Scientist objectives, then chains Bowhead Whale directly into its mutated form.
Last verified August 28, 2026
Use this page as a stage checklist. Finish the numbered route before spending on optional boss lures, then use the local tables for Fishipedia and side-route cleanup.
How to unlock Volcano Island
Return the Albatross head and follow the pink Radar marker.
If the marker is missing, return to Rocks Islandand verify its named boss result was handed to the correct quest giver.
Volcano Island walkthrough
- Speak to the military and Scientist NPCs before spending on the final loadout.
- Use Scientific Lures to gather money, healing and the five fish requested by the Scientist.
- Trade the five fish for the Fish Bucket or Whale Bait and use it to summon Bowhead Whale.
- Keep the defeated Bowhead intact, carry it into the final trigger and defeat the mutated phase.
- Complete the ending transport sequence to fire the finish-game achievement check.
Stage tips
- Stage ammunition and cooked healing before using the single-purpose whale bait.
- The Scientific Boss Lure and Goblin Shark are optional but required for a full Collector route.
- Patch 1.0.10 does not document a boss-route change, so the Bowhead body remains a critical trigger item.
Volcano Island creatures
This stage has 9 local directory entries in the Patch 1.0.10 snapshot. Quest bodies and boss results can be worth coins while still being required for progression.
| Creature | Type | Rod / bait | Base value |
|---|---|---|---|
| Anglerfish | Fish | Fishing Rod Scientific Lure | 1,500 coins |
| Blobfish | Fish | Fishing Rod Scientific Lure | 1,360 coins |
| Oarfish | Fish | Fishing Rod Scientific Lure | 1,450 coins |
| Superdwarf Fish | Fish | Fishing Rod Scientific Lure | 1,700 coins |
| Stonefish | Fish | Fishing Rod Scientific Lure | 1,500 coins |
| Goblin SharkBoss | Fish | Fishing Rod Scientific Boss Lure | 6,200 coins |
| Bowhead WhaleBoss | Special | Fishing Rod Fish Bucket / Whale Bait | 8,000 coins |
| Mutated Bowhead WhaleBoss | Special | None Defeated Bowhead Whale | 15,000 coins |
| Foot Snail | Special | None Ground pickup | 12 coins |
Volcano Island bosses
Story route
Bowhead Whale
The first whale is an expensive opening phase, not the end; its intact body is the key to the real finale.
- Trigger
- Fish Bucket / Whale Bait from the Scientist
- Result
- Defeated Bowhead body; carry it into the final encounter trigger.
Story route
Mutated Bowhead Whale
The Magma/Lava Whale alias refers to this mutated final form, the last combat gate before the ending sequence.
- Trigger
- Defeated Bowhead Whale brought into the final trigger
- Result
- Story ending, We are so back progress and the Scientist skin.
Optional
Goblin Shark
The costliest optional lure encounter is a late-game collection check, not part of the ending chain.
- Trigger
- $5,800 Scientific Boss Lure
- Result
- Collector credit and a 6,200-coin raw base catch.