Shark
Sharks, together with rays and skates, make up the subclass
Elasmobranchii of the Chondrichthyes. Sharks differ from other
elasmobranchs, however, and resemble ordinary fishes, in the fusiform
shape of their body and in the location of their gill clefts on each
side of the head. Though there are exceptions, sharks typically have a
tough skin that is dull gray in colour and is roughened by toothlike
scales. They also usually have a muscular, asymmetrical, upturned tail;
pointed fins; and a pointed snout extending forward and over a
crescentic mouth set with sharp triangular teeth.
Shark
Shark
Shark
Shark
Shark
Shark
Shark
Shark
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