| selachii | ||||||||||||||||||||||||||||||||||||||||
| navigate by keyword : and are bite cartilage cartilaginous characterized elasmobranch elasmobranchii endangered fins fish five fused gill group head hunter not ocean pectoral predator revolver selachii seven shark sharks sides skeleton slits species that | ||||||||||||||||||||||||||||||||||||||||
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| Sharks are a group of elasmobranch fish characterized by a cartilaginous skeleton, five to seven gill slits on the sides of the head, and pectoral fins that are not fused to the head | ||||||||||||||||||||||||||||||||||||||||
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