25 Facts About Sharks

#24 – They Don’t Have Bones

Did you know that sharks don’t have bones at all? That’s right, they are boneless creatures, but bad to the bone. However, they have something instead of bones that supports their heavy bodies. Instead of bones, sharks have cartilages. Now, what’s interesting is that these cartilages found in sharks can’t change shape or they can fold alongside a shark’s body.

The only irony about that all is that sharks are still classified as vertebrates, which are creatures that possess both bones and cartilages in their musculoskeletal system.