In the deep, dark Australian Abyss, what’s visible can be scarier than the unseen. There, giant sea spiders with glowing 25-centimeter-long legs may scuttle like disembodied apparitions.
Photos of these creatures unambiguously confirm that they exhibit bioluminescence, researchers report in the October Deep Sea Research Part I: Oceanographic Research Papers .
“It’s quite impressive for people scared of spiders,” says Jérôme Mallefet, a marine biologist with the Catholic University of Louvain in Belgium.
Mallefet and his colleagues discovered this phenomenon on a 2017 expedition to survey part of the deep-sea trench off southeastern Australia…
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