Do Sharks Have Bones?
Some fish has bones and some do not. You must have heard of the Hagfish. It is also quite popular as the Slime eel. It is the only fish that does not have bones. Instead of bones, it has a notochord. It is a flexible rod made up of cartilage. So, there are three categories – the ones with bones, one with a notochord, and the third one that you know about is the cartilaginous fishes or sharks.