A shark's skeleton is made up of cartilage.
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All of the bones in a shark's body are made of cartilage (like the end of your nose or your ears). The only exception are the teeth. That is why the teeth can be worn on necklaces.
Shark have skeletons that are made completely of cartilage. They do not have a single bone in their entire body.
Sharks are the most obvious answer.
A shark has the most flexible skeleton among the three. Sharks have cartilaginous skeletons that provide greater flexibility compared to the bony skeletons of frogs and lionfish. This flexible skeleton allows sharks to move more dynamically in the water.
Sharks, cartilage skeleton, lack scales, lack swim-bladder,Boney Fish. bony skeleton, scales, swim-bladder, interesting colouration.
Yes, it made out of cartilage just like sharks.
Nurse sharks are sometimes called "couch potatoes of the sea" due to their slow and docile nature.