The specimens are evidence of how little the squishy, tentacled predators have changed over the history of life on Earth. By Jack Tamisiea Jellyfish have been floating through Earth’s oceans seemingly ...

A student-led research group from Tohoku University has discovered a new species of the venomous Physalia (commonly known as ...

Jellyfish infestations are troubling tourists and scientists alike. A diver attaches a sensor to a large Echizen jellyfish, Oct. 4, 2005 off the coast of Komatsu in Ishikawa prefecture, Japan. Yomiuri ...

Scientists in Japan have discovered Physalia mikazuki, a previously unknown species of Portuguese man-of-war, in northern waters for the first time. DNA and anatomical analysis confirmed it as ...

Aggregations of Rhopilema nomadica, the commonest jellyfish in the southeastern Mediterranean, direct themselves to the west while swimming, thereby influencing their course. This finding has emerged ...

For years, science fiction has promised a future filled with robots that can swim, crawl and fly like animals. In one research lab at Caltech, what once felt like distant imagination is becoming ...