It has a big fin and many sharp teeth.

It has eight arms and can change color.

It has a hard shell and moves very slowly.

It is long and can produce electric shocks.

It has a soft body and long tentacles, and can sting you.

A starfish has five arms and can swim very fast.

An octopus can squirt ink to escape from danger.

A dolphin is a type of fish that lays eggs.

A crab has a soft body and no shell.

A jellyfish can sting people with its tentacles.