Sharks don't have bones

Posted in:#sharks, #animals, #bones 2011/01/23

Shark

All sharks have cartilage for their skeleton rather than bones. This is very different from humans and most types of land animals. Having this cartilage though is what allows them to move at unbelievable speeds through the water.¹

Cartilage is a softer, more flexible tissue than bone. The reason you can bend your ear or tip of your nose is because it's supported by cartilage. Most bones in our body are formed by cartilage precursors that later become calcified to form the hard skeletal tissue we know as bone.²

Source¹: sharks-world.com
Source²: CCMR