Sharks divide into two groups for reproduction purposes -- live-bearers and egg-layers.

The larger species produce live young that are fully formed, miniature versions of their parents and one pregnancy can bear from 2 to 50 young.

Mother sharks, however, offer no food or protection for their young. They may also eat their babies.

Young sharks do have a fighting chance, though, as they are born with a full set of teeth and the ability to swim.