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.

Scientists say they have unraveled the mystery of the unusual "stinging water" phenomenon long reported by swimmers and snorkelers who have strayed close to upside-down jellyfish—the creatures launch ...

Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. For years, snorkelers in mangrove forests around the Florida Keys ...

As pulsing blobs, jellyfish seem out of place among the ranks of sleek, efficient predators of the sea. However, new research indicates that they rival plankton-eating fish, such as sardines and ...

Scientists have captured video of a terrifying species of cannibal jellyfish that they call a "gelatinous predator." The intriguing creature has never been seen before, but researchers found it ...

Researchers confirmed what was already known: jellyfish eat bigger prey as they grow, which means they also occupy a higher position in the food web as they grow. They also found that some of the ...

Meet the giant phantom jellyfish. It's over a metre (3ft) wide and has four ribbony arms that trail behind for up to 10 ...

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.

Drifting along in ocean currents, jellyfish can be both predator and prey. They eat almost anything they can capture, and follow the typical oceanic pattern of large eats small. Now a recent ...

A team led by scientists at the Smithsonian's National Museum of Natural History, the University of Kansas and the U.S. Naval Research Laboratory report in the Feb. 13, 2020 issue of the journal ...