The Eye Flash Squid, Abralia veranyi, (Enoploteuthidae) is found in the Atlantic, Mediterranean, Caribbean and the Gulf of Mexico. The arrangement of the photophores in the tentacles helps to identify this species. Photophores on the ventral surface of this species produce a blue light matching the light coming down from the ocean's surface. A predator looking up from below will not be able to see the silhouette of the squid owing to the blue light from the photophores matching the light from the surface. This use of bioluminescence is called counterillumination and occurs in fish, cephalopods and other invertebrates. This individual was captured in a Tucker Trawl between the surface and 350 meters depth at night, in the Gulf of Mexico, 2010.
June 12th, 2013
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