The smallest shark species in the world is the Dwarf Lanternshark (Etmopterus perryi). It is a deep-sea shark that belongs to the family Etmopteridae. The Dwarf Lanternshark measures only about 17 centimeters (6.7 inches) in length on average when fully grown. These sharks are found in the tropical and subtropical waters of the Caribbean Sea and off the northern coast of South America.
The name "Lanternshark" is derived from the presence of light-emitting organs called photophores on their bodies. These photophores help the shark camouflage itself in the deep-sea environment. Despite their small size, Dwarf Lanternsharks possess all the typical features of a shark, including multiple rows of sharp teeth, a cartilaginous skeleton, and the ability to capture prey.