sharks-fact and fiction
how many kinds of shark are there?
they live in all of the world's oceans. some sharks,can live in rivers,too.
what are a shark's teeth like?
sharks have the strongest mouths in the world.Each type of shark has different teeth depending on what it eats.If a shark loses a tooth,another one appears immediately.A shark can grow and use over 20,000 teeth in its life.