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The Bobtail Squid has a unique luminescence for camouflage known as counter- illumination (xpost from /r/interestingasfuck) : r/Cephalopods
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The sharks that glow in the dark: Scientists release first experimental study of bioluminescent predators | The Independent
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Evidence that eye-facing photophores serve as a reference for counterillumination in an order of deep-sea fishes | Proceedings of the Royal Society B: Biological Sciences
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Stock photo of Firefly squid (Watasenia scintillans) emitting light from photophores.... Available for sale on www.naturepl.com
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