There are many marine animals that can glow in the dark! This phenomenon is called bioluminescence, and it's quite common in the deep sea where sunlight doesn't penetrate. Here are some examples:
Jellyfish: Many jellyfish species are bioluminescent. They produce a bluish or greenish light from specialized organs called photophores.
Plankton: Tiny organisms like plankton play a big role in bioluminescence in the ocean. They can create shimmering clouds of light at night.
Deep-sea fish: There's a vast diversity of bioluminescent fish in the deep sea. Some use light to attract prey, while others use it for communication or to confuse predators. Examples include anglerfish, viperfish, and lanternfish.
Dolphins: While less common, some dolphin species like the common dolphin have bioluminescent markings on their bodies. The exact function of this bioluminescence is still being studied.
Squid: Some squid species, like the Humboldt squid, can produce bioluminescent displays with light-emitting organs. They use this for communication, defense, and even to create mesmerizing patterns during mating rituals.
