Shark - Wikipedia - Deepstash

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Shark - Wikipedia

en.m.wikipedia.org

Do sharks have any bones in their body?

Shark skeletons are very different from those of bony fish and terrestrial vertebrates. Sharks and other cartilaginous fish (skates and rays) have skeletons made of cartilage and connective tissue. 

Cartilage is flexible and durable but is about half the normal density...

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