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Progression guide
How to Unlock Islands in How to Fish
Follow the complete How to Fish island progression route, from the Lighthouse and Spider Crab to the volcano whale sequence and the final mainland path.
Finish the current NPC request, defeat the required boss or task, hand in the named trophy, and then follow the new Radar coordinates.
Before you start
This guide answers “how to unlock islands in how to fish” for players who want a direct in-game route, not a generic real-world fishing answer.
Check the active NPC request and your current island before spending money; progression is usually tied to a trigger or hand-in.
Use this route in your run
Work through the steps in order and pause when the stated requirement is not met. The next obstacle normally becomes clear after the relevant quest item, boss trophy, or coordinates are received.
For a different type of problem—combat damage, money, a collection gap, or a co-op setup—use the related guides below instead of repeating the same farm.
What to do
- Lighthouse: finish Spider Crab and claim the boat keys.
- Island 2: complete the leech request, defeat Giant Piranha, and hand in its skeleton.
- Island 3 and 4: follow the Tourist/Carrot and Tuna routes to Pufferfish and Terrorizing Bird.
- At the volcano, follow the scientist’s whale experiment before carrying the Whale to lava.
Important tips
- Every island is a quest chain, not simply a destination.
- Do not throw random creatures into the volcano before the scientist gives the correct objective.