Guide coverage: patches through 1.0.9
4. Rocks
The fourth island has a two-part boss sequence. You must first catch and defeat a Tuna, then use the Tuna to summon the Albatross.
Main objective：Catch a Tuna with the Professional Boss Lure, use the defeated Tuna to summon the Albatross, and give the Albatross head to the person inside the shop.
Main walkthrough
- Buy the Professional Boss Lure and install it on your fishing rod. The regular Professional Lure is useful for catching valuable fish, but it does not replace the boss lure required for the Tuna.
- Cast with the Professional Boss Lure and defeat the Tuna. It jumps toward the direction you are moving, so move one way to draw the attack and change direction as it launches. Keep the defeated Tuna intact.
- Place the defeated Tuna on the grass to summon the Albatross. Do not sell or eat the Tuna before completing this step.
- Fight near the house so you can use it as cover. A loud screech signals a diving attack, so move inside. A quieter call signals an egg attack, which gives you an opportunity to fire from the doorway or another protected position.
- After defeating the Albatross, locate its small head. If it lands in the water, use the boat instead of trying to swim a long distance. Give the head to the person inside the shop to unlock the volcano island.
How to continue：After the Albatross head is accepted, the radar will point to the volcano island.
Creatures available on this island
Base price is the value before weight, grilling, roulette, and Killscore multipliers. Base weight is the species value used to calculate an individual creature’s weight and price.
| Creature | Base price | Base weight (kg) |
|---|---|---|
| Seahorse | 100 | 400 |
| Bass | 250 | 4 |
| Sengarat | 280 | 3.2 |
| Eel | 280 | 5 |
| Red Snapper | 280 | 4 |
| Halibut | 290 | 27 |
| Bing Bong | 300 | 5 |
| Tigerfish | 310 | 2 |
| Flying Fish | 320 | 4 |
| Voxelfish | 340 | 2 |
| Parrotfish | 350 | 28 |
| Dripper | 380 | 4.5 |
| Tuna Boss | 2000 | 70 |
Items available in the shop
The shop keeps selling important equipment from earlier islands. Disable the filter below if you need to replace an older tool or weapon.
| Item | Type | Use | Price |
|---|---|---|---|
 Crab Fishing Rod | Tool | The first-island rod. Attach crustacean bait to catch crabs, lobster, and the Spider Crab boss. | $3 |
| Hot Dog | Bait | Basic crustacean bait for Rock Crab and Lobster. | $1 |
 Boat Radar | Tool | Place it on the boat to see the direction and coordinates of unlocked islands at sea. | $10 |
 Radio | Tool | A portable music player with selectable stations; it has no known progression or combat benefit. | $10 |
 Beer | Tool | Give it to the lighthouse keeper to receive the Empty Beer Can used as Spider Crab boss bait. | $12 |
 Brass Knuckles | Weapon | An inexpensive close-range weapon that needs no ammunition. | $24 |
 Knife | Weapon | A close-range weapon; useful for stabbing the stunned Spider Crab in the back. | $45 |
 Fishing Rod | Tool | The standard rod used with regular and boss lures from the Forest onward. | $3 |
| Beginner Lure | Bait | Catches the Forest island’s common fish pool. | $3 |
| Beginner Boss Lure | Bait | Special lure for Sunfish and the optional Old Pike boss; it is not the Giant Piranha story bait. | $40 |
 Dynamite | Weapon | Creates a large explosion for killing or collecting several nearby fish at once. | $25 |
 Pistol | Weapon | A cheap early ranged weapon with accurate single shots. | $50 |
 Shotgun | Weapon | Fires multiple pellets and deals heavy damage at close range; strong against early bosses. | $150 |
| Standard Lure | Bait | Catches the Desert island’s regular fish, with a small chance of Blue Shark. | $15 |
| Standard Boss Lure | Bait | Dedicated lure for the Blue Shark optional boss; the Pufferfish story boss uses a Carrot instead. | $280 |
 SMG | Weapon | A rapid full-auto weapon that is good for landing steady damage on the Pufferfish. | $650 |
| Professional Lure | Bait | Catches the Rocks island’s valuable regular fish and can also pull Tuna at low odds. | $50 |
| Professional Boss Lure | Bait | Dedicated Tuna lure. The Tuna is then used to summon the Albatross story boss. | $1200 |
 Sniper Rifle | Weapon | A long-range precision weapon suited to shooting the Albatross from cover. | $3800 |