🖱️
Move
Your fish swims toward the mouse pointer. On touch screens, touch and drag. Arrow keys / WASD also work.
🐟
Eat smaller fish
Swim into fish that are clearly smaller than you (you must be at least 20% bigger). Each meal makes you grow.
📏
Size is everything
Fish your size or bigger can't be eaten. Fish glowing red are big enough to eat you.
🦈
Escape predators
Hunters marked with ! are chasing you. Red arrows at the screen edge show threats coming from off-screen. Swim away and they give up.
⚡
Boost
Hold the mouse button, press Space, or tap BOOST for a burst of speed. It drains stamina, which refills when you stop boosting.
🌊
Explore
Start in the Coral Reef, then head east to the Open Ocean and the Deep Sea. The prey there is bigger and so are the dangers.