How to Fish Island 4: Rocks, Tuna & Albatross Guide

Access to the Rocks comes from the previous island's boss, not from a purchase. Beat the Pufferfish on Island 3 and deliver its trophy — the half-fish piece most guides call the Pufferfish Fin — to the Tourist, and the route to Island 4 opens up.

Once the hand-in is done, sail out with your Radar and watch for the next signal. If the marker does not appear, check that you actually delivered the trophy rather than just killing the boss; the unlock is tied to the turn-in, not the fight.

Island 4 runs on the Professional Lure, the fourth bait tier, and its regular catch pool is where several of the game's odder fish names come from. Confirmed catches on the Rocks include the Red Snapper, Sengarat, Dripper, and Voxelfish, all taken with a fishing rod and the Professional Lure.

These catches are valuable, so the island doubles as a money stop before the endgame — see the money guide for the wider economy. The fish guide lists the full per-island pools, and the lure guide explains how the Professional tier sits in the lure ladder.

The Professional Boss Lure draws out the Tuna, and the fight starts the instant it leaves the water — players who cast empty-handed lose the opening seconds fumbling for a weapon. Equip your gun before you cast, and bring an upgraded Shotgun if you have one.

The Tuna's pattern is a straight charge that overshoots when it misses, and the recovery window after a whiffed charge is where your damage goes. It fights on a small patch of island, so footwork matters more than raw stats. The full breakdown is on the Tuna boss page.

Do not sell the Tuna after the kill. Its body is the bait for the island's real boss, and selling it means catching another one.

Lay the caught Tuna on the ground and wait — the Albatross, the terrorizing bird that has plagued the islanders, flies down to take it. That is your cue to fight, and this encounter punishes two specific habits: fighting out in the open, and bringing short-range weapons.

The bird flies at a distance, which makes melee and short-range setups nearly useless, so bring a long-range gun. A sniper rifle hits for roughly 250 damage per shot at this stage, but any rifle beats a shotgun here. Its signature poop attack deals heavy damage to anyone caught without cover, so fight near a building, duck under a roof when it lines up a drop, and step out to shoot between attack runs. The Albatross boss page goes deeper on the rhythm.

When the Albatross dies, pick up its severed head — listed in guides as the Albatross Head or Bird's Head — and feed it to the NPC in the shop. That hand-in, not the kill itself, is what unlocks Island 5: the shopkeeper trades the head for the Volcano's radar coordinates.

The Volcano is the final island, where the hazmat-suit NPC, the Scientific Lure, and the Bowhead Whale chain wait. Before you sail, wrap up anything you still want from the Rocks, because the endgame loop keeps you busy once you arrive.

• Selling the Tuna: its body summons the Albatross, so keep it out of the shop.
• Casting the Professional Boss Lure unarmed: the Tuna attacks the moment it lands. Equip your weapon first.
• Fighting the Albatross in the open: the poop attack shreds anyone without a roof.
• Bringing short-range weapons: the bird stays airborne at distance, so bring a long-range gun.
• Forgetting the head: the Volcano unlock is the shop hand-in, not the kill.

Quick checklist: turn in the Pufferfish trophy on Island 3, sail to the Rocks, fish the Professional Lure pool, cast the Professional Boss Lure with a weapon ready, beat the Tuna, lay it on the ground, kill the Albatross from cover, then feed the head to the shop NPC for the Volcano coordinates. The full walkthrough shows how Island 4 fits the complete run.