Sharks are egg layers. The male shark has claspers on each side of his body. Many people believe male sharks have two penises when in fact they are looking at the claspers. These are used to place the sperm inside of the female. The sperm will then be fertilized and an egg laid. The egg is sometimes left in a protective casing called a mermaid's purse. The pups are born looking similar to the adults. They do not have to go through a larvae stage.