No, sharks do not have bones. Their skeletons are made of cartilage, the same flexible, “rubbery” material found in human ears and noses. The rest of this article is behind a paywall. Please sign in or subscribe to access the full content.

Unlike bone, which is a rigid, mineralized tissue rich in calcium phosphate, cartilage is made mostly of water and protein collagen, making it lighter, flexible, and less rigid.

Bonelessness is a defining characteristic of sharks. They belonged to a group known as cartilaginous fishes, along the likes of rays, skates, sawfish, and chimaeras (better known as ghost sharks ). As a family, they are among the oldest living groups of jawed vertebrates on the planet.

Do sharks have bones in their jaw?

Sharks don't even have jawbones in the classic sens

See Full Page