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Several deep sea creatures have perfected the lightning technique known as bioluminescence, using it to lure prey, distract predators, or attract mates. Some creatures use it for camouflage. In parts of the water column where only faint blue light filters through, animals bioluminesce to match the glow. Predators or prey looking up from below are deceived by this camouflage, unable to see the creatures silhouette. Such otherworldly adaptations also arise from the need to locate and snatch up food before it drifts away.

From the TED-Ed Lesson The otherworldly creatures in the ocean’s deepest depths - Lidia Lins

Animation by Viviane Leezer