About the name…

The shark was identified by shark researcher Victoria Vásquez. When asking for advice on naming the shark at a family gathering, it was actually her younger cousin who named the shark, pointing out that “ninjas are awesome.” The specific name benchleyi derives from Peter Benchley, author of the 1974 novel Jaws that was used as a basis for Steven Spielberg’s film of the same name.

Glowing in the dark…

Bioluminescence and diet

Because the ninja lanternshark is known to live at deep sea depths, it has a very dark coloration to blend in with the lack of light. Although the dark pigment can act as camouflage that helps hide from predators, it can also be useful when sneaking up on prey. This is because when ninja lanternsharks are feeding in shallower waters, their luminescent underside has the same appearance as the sunlight filtering down from above and camouflages them from potential predators below.

However, when they are in the deep sea, their luminous appearance attracts smaller prey to them which consist of shrimp and other small fish and crustaceans.

https://en.wikipedia.org/wiki/Ninja_lanternshark