Michael Durham / Douglas Fir Glow-worm (Pterotus obscuripennis) displaying bioluminescence at night, Tillamook State Forest, Oregon

Michael Durham / Douglas Fir Glow-worm (Pterotus obscuripennis) displaying bioluminescence, Tillamook State Forest, Oregon

Chris Newbert / Jellyfish exhibiting bioluminescence, Hawaii

Chris Newbert / Jellyfish, exhibiting bioluminescence, Hawaii

Chris Newbert / Ctenophore (Hormiphora palmata) exhibiting bioluminescence, Hawaii

Norbert Wu / Comb Jelly (Pleurobrachia bachei), Monterey, California