Pbs: Nature: The Fascinating World of Jellies

Learn about the mysterious jellyfish blooms that have occurred in the world's oceans. Because the resulting alteration to the marine food web has had devastating effects, researchers grow and study jellyfish at the Monterey aquarium. Find out how these scientists link these overpopulation occurrences to overfishing, pollution, and climate cycles, and what steps they are taking to remedy the problem.