3. Fossil remains of the megalodon have been found off the coast of every continent except Antarctica. ... Since sharks don't have bones, most of what we know about megalodon comes from its large fossil teeth. The largest megalodon tooth ever found was 6.9 inches long.

What are Megalodons bones made of?

Megalodons are made of cartilage. Cartilage is much softer than bone. Because of this, most of the megalodon will not fossilize. On rare occasions, vertebra and fragments of cartilage will fossilize.

Could a megalodon still be alive?

But could megalodon still exist? 'No. It's definitely not alive in the deep oceans, despite what the Discovery Channel has said in the past,' notes Emma. ... The sharks would leave telltale bite marks on other large marine animals, and their huge teeth would continue littering the ocean floors in their tens of thousands.