According to an open access study in Nature's Science Reports, 76% of all of the animals living from the surface of the ocean to a depth of 3,900 meters have bioluminescence capability. The data was gathered by remotely operated vehicles surveying off the California Coast. The prevalence of bioluminescence suggests that it is an ecological trait, ie. something animals in the habitat should be expected to have.
Quantification of bioluminescence from the surface to the deep sea demonstrates its predominance as an ecological trait (open, DOI: 10.1038/srep45750) (DX)
(Score: 1, Funny) by Anonymous Coward on Friday April 14 2017, @12:28PM
...at the Diablo Canyon outfall?