Cartilaginous Fish

Cartilaginous Fish

Cartilaginous fish are a special animal group that includes sharks, rays, and skates. They differ from most other fish because their skeletons are made of cartilage, not bone. Cartilage is lighter and more flexible than bone, which helps these fish move easily through the wate...

Cartilaginous fish are a special group of fish that have skeletons made of cartilage instead of bone. It's the same flexible material found in your ears and nose.

This group includes sharks, rays, and skates. Since they lack bones, they produce red blood cells in the spleen. In some species, it is produced in a special organ called Leydig’...