Natural Fireworks / by Michael Johns

We do a fare bit of night work out here on the Farallones, from banding Ashy Storm-petrels to access population trends to netting Rhinoceros Auklets to collect diet samples. On this particular night, on our way back to the house after conducting cave surveys for an endemic cricket species, we noticed the waves in Maintop Bay were giving off tiny flashes of bright blue-green light. It was bioluminescence, a natural emission of light produced by living organisms, in this case by microscopic phytoplankton called dinoflagellates. The agitation of the surf causes them to give off this glow, lighting up the shoreline with a natural display of fireworks. Although not visible in this photo, I can assure you the sparkling waves evoked several "wows".