The Pristiophorus cirratus, or longnose saw shark, is identifiable by its tapered, saw-shaped nose. A bottom dweller, the shark is most commonly found in the Eastern Indian Ocean at depths of 100 to 400 feet.
Also known as the common saw shark, this species grows to an average of 3 feet long, with the snout accounting for up to 30 percent of its length. The shark feeds on crustaceans and small fish found along the ocean floor. It uses electro-receptors and whisker-like barbels on the saw appendage to locate prey buried beneath the sand. While the saw shark does use its snout to slash at prey, this species is not a threat to man.