Researcher With a Giant Jellyfish
A researcher swims with a jellyfish species known as Chrysaora on the coast of Argentina. (The researcher's wet suite protects him from the jellyfish's sting.) To learn about jellyfish research, visit the National Science Foundation's Special Report on jellyfish; Jellyfish Gone Wild: Environmental Change and Jellyfish Swarms.
Credit: John H. Costello of Providence College