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Carcharhinus obscurus Dusky Shark Jaw |
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The Dusky Shark, Carcharhinus obscurus has a long pointed snout, long pectoral fins and a low ridge between the dorsal fins. The first dorsal fin is tall and the tail is heterocercal. The teeth are serrated. Those in the upper jaw are broad and triangular. The lower jaw teeth are more slender. This species is grey to grey-brown above and pale below. There is an indistinct stripe on the side of the body. It extends forward from above the pelvic fins. In juveniles, the lower lobe of the caudal fin and underside of the pectoral fins are dusky. Fin markings become less distinct as the fish ages. The Dusky Shark grows to 3.65m in length. It occurs in continental and insular shelf waters from the surface to a depth of 400m. It is found worldwide in tropical and warm temperate waters. In Australia it is found in all coastal and continental shelf waters. The Dusky Shark is also known as the Black Whaler and Dusky Whaler.
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