📋 Staged walkthrough

Cobra invites Dave to start a sushi business using the Blue Hole’s varied fish. Learn the harpoon and catching fish in the Shallows, 0–50 m, through the tutorial.

Explore the shallows and bring back a variety of fish for the simple opening menu. Surface before oxygen runs out and avoid overloading enough to slow movement.

Serve the day’s catch at night. Prompt delivery, drinks and wasabi management support followers and reputation. Learn the basic rhythm of diving by day and selling dishes at night.

Reinvest gold in diving gear through iDiver. Air Cylinder increases dive time and Cargo Box increases carrying capacity, improving the next trip. Maki can support Cooking after she joins. Her specific recruitment event or request requirements have not been cross-checked here; check the current request screen.

Duff joins through an early weaponsmith quest. Picking up matching guns from underwater weapon chests accumulates blueprints for crafting. The first gun improves options against tough fish and groups.

Use iDiver to improve the suit before going deeper into the 50–130 m zone. Medium Depths include valuable large fish such as tuna and marlin, which can substantially increase income per dive.

Cooksta ranks such as Bronze, Silver and Gold expand restaurant activity. Check followers, researched recipes and Best Taste requirements, using Enhance to improve a dish for the taste threshold.

Recruit high-Serving staff such as Raptor through Yoshie to improve delivery. Maki can support Cooking while you strengthen service and stabilize the evening’s throughput.

The main story leads to Sea People Village. Earning trust opens Bei and items from vendors such as the village blacksmith that require it.

Serving Otto Moray Eel Curry opens the Fish Farm. Roe from catches can support breeding and steady ingredients. Check each species’ compatibility; farming Mantis Shrimp or Clione is unverified.

Otto’s rice/vegetable farms and the Sea People Village seaweed farm provide supplementary ingredients. Valuable recipes often need produce and seasonings, so keep the farms supplying your menu.

Spend Artisan’s Flame to research unlocked recipes before serving them. Successful night service earns more Flame. Prioritize high-price recipes, considering the ingredients you can supply.

Improve suit and oxygen for Blue Hole Depths at roughly 130–250 m. This is not the whole game’s maximum depth; later regions go farther. Check each creature’s conditions and reserve oxygen for the return.

Giant Squid is a boss, not a catch. Target the exposed eye and avoid ink knockback. Use arena oxygen and ammunition when needed. A fixed five-to-six-shot count and guaranteed Red Sniper Rifle access at this encounter are unverified.

Some rare creatures, including seadragons, appear randomly after mining specific deposits. Search around ruby deposits in the Hydrothermal Vents for Ruby Seadragon, and deposits in the Glacial Area for Weedy Seadragon.

Use valuable ingredients and dish enhancement to meet Best Taste requirements for Platinum and Diamond. Balance Cooking such as Yone, Serving such as El Niño, and procurement such as Davina.

Follow the story of the Sea People and humans to its ending. Restaurant management, diving and collection continue afterward, alongside additional and seasonal events.

Meet the follower, researched-recipe and Best Taste requirements for Diamond. Assign staff to useful roles and maintain ingredients through farms and the Fish Farm.

Check missing encyclopedia entries individually, including small creatures caught with Bug Net, and research recipes to expand the menu. The selected species on this site are not a complete collection checklist; unverified rare-species examples are not guaranteed spawns.