Bioluminescent Comb Jelly
Description and Comments
Spotted this near the surface of a shipwreck in Enterprise Island. It was blinking red, and maybe also purple, green and yellow if my memory is correct. It has long tentacles that also light up. Aside from the tentacles, it looks very similar to a beroe cucumis, or maybe a callianira antarctica. It looks like a large gooseberry fruit when not lit up.