Weird Creatures From the Deep

A massive census of the oceans has turned up a trove of strange marine wildlife, from jellyfish to octopuses to anemones

The Australian Dragonfish (Dr. Julian Finn, Museum Victoria)


Deep-sea Jellyfish
(Brian Wolly)
You won’t spot this striking jellyfish (Atolla wyvillei) anywhere near the ocean’s surface—which is a shame, because this deep-sea inhabitant, which lives at depths as great as 16,000 feet, has its own built-in light show. When caught by a predator, A. wyvillei lights up in a process called bioluminescence. This “burglar alarm,” scientists speculate, is meant to attract the attention of an even bigger creature that might be able to eat the predator and free the jellyfish.

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