This deep sea shrimp, Acanthephyra purpurea, spews bioluminescence to blind or distract a predator. Image courtesy of Edith Widder/HBOI
This blackdevil angler fish, Melanocetus johnsonii, has a luminescent lure that she uses to attract prey and to identify herself to potential mates. Image courtesy of Edith Widder/HBOI
This deep-sea fish, Photostomias guernei, has a built-in bioluminescent "flashlight" it uses to help it see in the dark. Image courtesy of Edith Widder/HBOI