Do fish that live deep in the ocean glow?



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    Yes! A number of fish and other animals have developed similar glowing abilities which they use for a number of different purposes. Some of these adaptations are used for communication purposes, with schools of shimmering fish blinking to each other much like fireflies or other light-producing insects do. Not all of the light-producing adaptations that deep ocean creatures have developed are used in this way, however. Bioluminescence is also used as a lure to attract prey by several deep sea fish such as the anglerfish. A dangling appendage that extends from the head of the fish attracts small animals to within striking distance of the fish.

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