The family Narcinidae, commonly known as numbfish or electric rays, consists of cartilaginous fish found primarily in warm coastal waters. They are characterized by their flattened bodies and large pectoral fins, which give them a disc-like appearance. Numbfish are known for their ability to produce electric shocks, which they use for defense and to stun prey. Narcinidae species typically inhabit sandy or muddy seabeds, where they can camouflage themselves. They feed on small fish and invertebrates, using their electroreception to locate prey. These rays are generally not aggressive and pose little threat to humans, making them a fascinating subject of study in marine biology.