Bacteria in deep-sea anglerfish give the predators a luminescent glow – but despite being adapted to this lifestyle the microbes leave for the open water
Source:
https://www.newscientist.com/article/2219425-deep-sea-anglerfish-may-shed-luminous-bacteria-into-the-ocean-water/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home