by Elio — Deep within the oceans, sea an­i­mals and bi­o­lu­mi­nes­cent bac­te­ria play sym­bi­otic games. Fish, squid, and other an­i­mals that bring light to the dark­ness use it in their quest for food, their search for mates, or the avoid­ance of preda­tors. This is not merely a cu­rios­ity, as seen by the sim­ple fact that...