Fireflies Fireflies, or lightning bugs, are perhaps the most well-known bioluminescent insects. They produce a flickering light to attract mates or communicate with other fireflies.

Glowworms Glowworms are the larvae of certain species of beetles. They emit a green or bluish light to attract prey or mates.

Lanternfish  Lanternfish are small, deep-sea fish that have light-producing organs on their bodies. They use bioluminescence for communication, camouflage, and attracting prey.

Deep-sea anglerfish  The anglerfish is a deep-sea predator that uses a bioluminescent lure, called an esca, to attract prey.  The glowing lure dangles from a fleshy filament on the fish's head.

Bioluminescent plankton  Various types of plankton, such as dinoflagellates, emit bioluminescent light when disturbed. This creates a shimmering effect in the water, commonly known as "sea sparkle" or "phosphorescence."

Vampire squid The vampire squid is a deep-sea cephalopod that possesses light-producing cells called photophores. It can emit a glowing light to confuse predators or potential prey.

Marine hatchetfish  Hatchetfish are deep-sea fish that have reflective surfaces on their bodies, enhancing their bioluminescent glow. This adaptation helps them blend in with the faint sunlight filtering through the water.

Bobtail squid Certain species of bobtail squid have bioluminescent organs called photophores  on their undersides. They use this light to counteract  their shadows and avoid detection by predators.

Glowing click beetles Click beetles are known for their ability to produce a clicking sound by snapping their bodies. Some species also possess bioluminescent organs that emit a greenish glow.

Glowing millipedes  Several species of millipedes, such as Motyxia millipedes, are bioluminescent and emit  a soft bluish-green glow.  This luminescence is  believed to serve as a warning to potential predators.

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