Fireflies produce light with the help of a substance called luciferin. Their glow is mainly for communication. Research shows that during the mating season, the male and female flash specific light patterns to attract each other.
Cookiecutter Shark has the ability to emit a greenish light from the photophores located on their bodies. This glow helps them blend with the light coming from above, making them nearly invisible. Their combination of camouflage and deception makes them great predators.
The Firefly Squid emits a blue light which it uses to attract prey, communicate, and camouflage. They are photophores, a light producing organ, all over their body.
Flying Squirrels are known for their unique ability of gliding from tree to tree. They also have a hidden trait where under the ultraviolet light, their fur glows bright pink. This phenomenon, called biofluorescence, helps them to communicate and stay hidden from predators.
Comb Jellyfish, also known as ctenophores, usually emit a soft blue or green light in the dark waters. This glow confuses the prey, startles predators, and helps them communicate with their own kind.
Glowworms emit a cold and bluish-green light that they use for attraction and survival. They are mainly found in caves and forests. These worms use this ability to draw potential partners as well which helps with mating.
Anglerfish is known for its glow that comes from its specialised organ called the esca where the bioluminescent bacteria lives. These bacteria and the anglerfish have a symbiotic relationship. This glow helps the anglerfish to lure smaller fish close to its mouth.
Lantern Sharks have photophores scattered across their bodies which helps them to emit light. They use this fascinating ability for defense and offense. Researchers also believe that bioluminescence may also help them to identify each other in the darkness of ocean.
Crystal Jellyfish is nearly transparent creature that has the ability to emit a green light. This glow comes from a unique protein called aequorin which emits light in response to calcium ions. These marine creatures glow when they are triggered by movement or stimulation.