As reported by Slate Magazine: Scientists have discovered a trippy scene under the Red Sea, full of fluorescent, glowing corals. An international team of researchers discovered the colorful corals at depths of more than 150 feet below the surface and published their findings in PLOS ONE.
This has been on one of the TV shows sometime ago.
Reported back in 2011 and they’re all over the deep ocean.
http://www.livescience.com/17685-glow-coral-oceans-nsf-bts.html