Many deep sea creatures are bioluminescent. However, before documenting the luminescence of the kitefin shark, Dalatias licha, there has never been a nearly six-foot long luminous vertebrate creature. In a recent study, Mallefet and colleagues examined three species of sharks: Dalatias licha, Etmopterous lucifer, and Emopterus granulosus and documented their luminescence for the first time. These bioluminescent sharks are the largest bioluminescent creatures known.
![Researchers studied three species of bioluminescent sharks near the Chatham Islands, New Zealand](https://www.promegaconnections.com/wp-content/uploads/2021/03/AdobeStock_213451954-1024x446.jpeg)