They are otherworldly creatures that glow in the dark, without brains or bones, some more than 100 feet long. And they live just off California's coast. Join two top marine biologists who have devoted their careers to unlocking the mysteries of jellyfish and alien-like siphonophores.Amazing Jellies
Mark Frauenfelder is the founder of Boing Boing and the editor-in-chief of MAKE and Cool Tools. Twitter: @frauenfelder. Come and hear Mark speak at the ALA conference in Chicago on July 1.