The only part of their skeleton not made from this soft, flexible tissue is their teeth. The group includes the more famous animals such as whale sharks and great whites, but also all rays, skates and ...

Ghost sharks can be identified by their smooth skin, free of scales. They feed off crustaceans such as shrimp and molluscs ...

Greenland sharks have narrow, pointed upper teeth and broader, squared teeth on the lower jaw. Holding large prey in position with their upper teeth, they roll their head in a circular motion ...

"Ghost sharks like this one are largely confined to ... such as shrimp and molluscs with their distinctive beak-like teeth.