Requiem sharks, ground sharks, blue sharks, and sharpnose sharks are the common names for the members of the Carcharhinidae family. They have 5 gill openings, the fifth behind origin of pectoral fin. Their eyes are on sides of head, with a well-developed nictitating lower eyelid. They also have sharp blade like teeth.
Members of the Carcharhinidae are found in all oceans, mostly in tropical waters. There are the largest shark family, with 12 known genera and 58 species worldwide. Small species often occur inshore while the large species often occur offshore. These fishes are strong and active swimmers. They can occur either solitary or in small school. All species are live-bearing, with young born fully developed. They feed on any animal that may present in their habitat, and some large species are known to attack human.