The most well-known, perhaps, is the aptly named lantern shark. This small animal lurks in the deep dark sea, deploying the glow to camouflage itself against the faint blue light of its environment.

Suddenly the dark waters lit up with a “starry”-looking glow. The source? An unusual new species of deep-sea animal.

Some intriguing creatures in the animal kingdom can glow. Although most of us are familiar with fireflies, the majority of glowing animals actually reside in the depths of the ocean. Native to ...