Three Cassiopea, or upside-down jellyfish, from Bonaire, Dutch Caribbean seen from above in the lab at the Department of Invertebrate Zoology in the Smithsonian’s National Museum of Natural History. Credit: Allen Collins and Cheryl Ames

Stinging Water Mystery Solved: Jellyfish Can Sting Swimmers, Prey With ‘Mucus Grenades’

Interdisciplinary Research Team Discovers, Describes New Free-floating Jellyfish Stinging Structures News Release, Smithsonian Institutes In warm coastal waters around the

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