A starfish is like a squishy, five-armed ocean pancake that forgot how to be a fish. It doesn’t swim, it just kind of flops around the sea floor, munching on clams and other small things with its tube feet, which are like tiny, sticky straws. Picture a colorful blob that’s been sprinkled with glitter and is mostly made of water, just hanging out in the tide while looking like it’s always been bad at hide-and-seek.