Others live in shallow reefs only a few feet from the shore. Large sharks are found between 100 feet deep and the surface. Large sharks don't like to come close to shore. The largest sharks are filter feeders. They eat plankton.
Plankton is tiny plants and animals that float near the surface.
Gill rakers filter out the food from the water to help these large sharks eat. Many sharks actively chase their food. Only 25 kinds of sharks eat big fish and mammals. These eat sea mammals and even other sharks. Sharks have 5 to 20 rows of teeth.