The Dwarf Lanternshark (Etmopterus perryi) is the smallest known shark species. It is a deep-sea shark found in the Caribbean Sea, specifically off the coast of Colombia and Venezuela. It typically grows to a maximum length of about 7 to 8 inches (17 to 20 cm).
The Dwarf Lanternshark gets its name from the numerous light-emitting organs called photophores found on its body. These photophores help it to camouflage and communicate in the dark depths of the ocean. It has a slender body, dark brown or black coloration, and large eyes relative to its small size.
Being a deep-sea species, the Dwarf Lanternshark inhabits depths of around 700 to 1,300 feet (200 to 400 meters). It feeds on small fish, crustaceans, and squid. Due to its small size and deep-sea habitat, not much is known about its biology and behavior. It was first described and classified as a distinct species in 2008, making it a relatively recently discovered shark.