What are shark skeletons made of?

A Shell
B Cartilage
C Bone

Fact: Sharks have skeletons made of cartilage, not bone, making them lighter and more flexible in the water. This helps them move quickly without using too much energy. Their skeleton is coated with a layer of tiny, mineralized tiles called tesserae, which add strength while keeping them agile.

Correct Answer: Cartilage