What Divers Should Know About Silky Sharks

The silky shark, Carcharhinus falciformis, gets its common name from the notably smooth texture of its skin. This slender, streamlined requiem shark is a truly oceanic species, widely distributed across tropical waters worldwide. Divers typically encounter this highly mobile shark over the edge of the continental shelf, often down to depths of 50 meters (164 ft).

Growing to an average length of 2.5 meters (8 ft 2 in), the silky shark is recognizable by its long, sickle-shaped pectoral fins and relatively small dorsal fins—the first with a distinct curving rear margin. A metallic bronze-gray dorsally, fading to white below, its coloration provides effective camouflage in the open water. This species is a swift, inquisitive, and persistent hunter in its pelagic environment. While generally avoiding human interaction, silky sharks have been known to exhibit aggressive behavior towards divers, although such incidents remain rare due to their preference for open ocean habitats.