Don't know if this counts as a game but I'll give it a shot. Okay what you do is list as many animals as you can that live in water or mainly in water. If you say fish specify what type of fish. IDK just testing this out. Have fun!
sperm whale blue whale humpback whale clown fish lemon shark goblin shark hammer shark great white shark ( my mind is so blank atm, i can't name anymore :^ )