There are lots of different kinds of fish living in the sea. Some are very, very small. Others grow to be very large. On this site: Types of Fish Sharks Sea Ray Fish Schools Books on Fish Links to other Pages on Fish The are lots of types of fish that live in the sea. Different types of fish live in different parts of the ocean. Some live close to coral reefs. Some live near the surface. Some even live in the deep waters close to the bottom of the ocean. Fish eat a variety of things, from plants, plankton (small living organisms), to even other fish.