Sousuke as spotted shark thing rin as shark, momo is idk haru is dolphin makoto is killer whale nagisa as penguin rei as butterfly and nitori as seal? << that "spotted shark thing" is a whale shark.
Sousuke doesn't have to eat healthy. He can eat an entire pizza himself in 45 minuets and be fine at practice the next day. Rin on the other hand watches what he eats and even got a schedule from Rei and Gou