Gray to brown above, white below. Skin looks and feels silky. Dorsal is comparatively small and begins at a point behind the pectoral fin. Most are a Bluish gray, large slender shark, the Silky is characterized by a moderately extended, rounded snout, a relatively sloping first dorsal fin with a blunt apex that originates behind the free margins of the pectoral fins, a small second dorsal fin with an extremely long free rear tip (more than 2x the height), and a low inter-dorsal ridge. Pectoral fins are long and slender, typically with dusky tips. The Silky Shark, also known as the Carcharhinus Falciformis, gets its name from the smooth and silky texture of its skin. Depending on its geographical location, it is also known as the Grey Reef Shark, Olive, Whaler, and sometimes Blackspot. These sharks have a streamlined and slim body. As adults, they can reach 3.5 meters (12ft) in length and weigh around 350 kilograms (770 pounds). They have an extremely strong sense of hearing. This acts as a great advantage for locating their preys, mostly consisting of bony fish (especially Tuna), octopuses, and squids. These predators have a perfect and effective hunting behavior. They dive together in large groups of fish and attack them with lighting fast speed and wide open mouths. Dorsal spines (total): 0; Dorsal soft rays (total): 0; Anal spines: 0; Anal soft rays: 0. A large, slim shark with a moderately long, flat and rounded snout, large eyes, small jaws, and oblique-cusped teeth with serrations; 2nd dorsal fin low and with greatly elongated rear tip. Grey or bluish-grey above, white below; no conspicuous fin markings. Only Carcharhinus species with an interdorsal ridge that has the dorsal fin origin behind the free rear tip of the pectoral fin