Quick answer
Keep the lighthouse or nearby solid terrain between you and the boss, let it commit to a rush, then attack while it is staggered or recovering. Create space again before the next approach.
Prepare a repeatable route
Enter with a weapon you can control and enough room to retreat. Decide which side of the structure you will circle before the encounter becomes chaotic.
Fight in short damage windows
- Hold medium distance and keep the structure close.
- Move around its edge as the boss commits to the approach.
- Watch the movement animation rather than staring only at health.
- Attack during the visible stagger or recovery.
- Stop firing early enough to restore spacing.
Common failed approaches
- Backing across open ground until the shoreline blocks the escape.
- Continuing to attack after the recovery window closes.
- Standing together in co-op so every player shares one danger lane.
- Selling a distinctive trophy before testing the nearby quest hand-in.
Community guidance: this route is based on launch-period player reports and may change with balance or physics updates. Follow current in-game behavior when it differs.
Continue with Island Progression or prepare for the Pufferfish Boss.
Sources
- How to Fish on Steam — Dazed Games / Valve — https://store.steampowered.com/app/4001890/How_to_Fish/ — accessed 2026-08-23 — supports the official boss and island-progression loop.
- How to Fish General Discussions — Steam Community / Valve — https://steamcommunity.com/app/4001890/discussions/ — accessed 2026-08-23 — supports current player questions and launch-period tactics, not developer-confirmed rules.