High Quality Content by WIKIPEDIA articles! The blacknose shark (Carcharhinus acronotus) is a species of requiem shark, family Carcharhinidae, common in the tropical and subtropical waters of the western Atlantic Ocean. This species generally inhabits coastal seagrass, sand, or rubble habitats, with adults preferring deeper water than juveniles. A small shark typically measuring 1.3 m (4.1 ft) long, the blacknose shark has a typical streamlined "requiem shark" shape with a long rounded snout, large eyes, and a small first dorsal fin. Its common name comes from a characteristic black blotch on the tip of its snout, though this may be indistinct in older individuals.