Now, this post is not for the youngin's so if you don't want to know how sharks mate, don't read this!
How do sharks breed?
While some species breed differently.
Mating in sharks has been rarely observed (so no picture for all you perverts), but most species do it while they swim parallel to each other and the male inserts a clasper into female's oviduct.
There are three ways in which shark pups are born:
Sharks lay eggs.
Sharks have placental links with developing pups. Pups born fully functional.
Method used by most shark species.
Eggs develop inside the oviduct and hatch inside the oviduct where it finishes its development. Pups born fully functional.