shark(redirected from Selachimorpha)
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Related to Selachimorpha: Dinoflagellata, Selachii, Lamniformes
Any of numerous cartilaginous fishes of the subclass Elasmobranchii that are chiefly carnivorous and marine. Sharks have a streamlined torpedolike body, five to seven gill openings on each side of the head, a large oil-filled liver, and tough skin covered with small toothlike scales.