POLISH ACADEMY OF SCIENCES, JAROSLAW STOLARSKI; NATIONAL MUSEUM OF NATURAL HISTORY, ISABELLE DOMART-COULON(See K. Frankowiak et al., "Photosymbiosis and the expansion of shallow-water corals," Science Advances, doi:10.1126/sciadv.1601122, 2016.)
Image of the Day: Sea-Dwelling Symbionts
Scientists date the origin of symbiosis between coral and algae to 210 million years ago.

