shark

  

Sharks are fishes with a full cartilaginous skeleton, fusiform body, tough and rugged skin covered with small toothlike scales that protect them from parasites and damages. They have five, but sometimes seven, gill slits along the side of the head. Though they are considered dangerous for the humans they rarely attack the people. Among the various species there are the great white, the mako, the hammerhead, the tiger fish.



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shark animal danger

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 fishes photo. shark 5 5 stars (18 votes)

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Valentina Sannicolo.

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sharks, cartilaginous skeleton, heterocercal fins, caudal fins, tough, rugged skin, toothlike scales, gillshark.