The colors and light of the deep sea are on full display in these photos from The Radiant Sea: Color and Light in the Underwater World. CREDIT: Sönke Johnsen. We thought they might be light organs and scurried inside a darkroom to find out. CREDIT: Steven HaddockBathophilus – This formidable fish has been featured in both the Transparency and Iridescence sections, and could have been mentioned in Bioluminescence as well. Photos reprinted from The Radiant Sea: Color and Light in the Underwater World, published by Abrams.