cool water sandwich - 2011-10-11 It's probably just millions of angry jellyfish that eat surfers.
MrBuddy - 2011-10-11 "The phytoplankton in this red tide off a California beach are bioluminescent. Their cells produce a chemical reaction that creates a soft, blue-green glow. It's basically the same thing that makes lightning bugs light." http://boingboing.net/2011/10/03/surfing-the-red-tide.html