Where did their adult jellyfish go, and how did an infant jelly come to be? This is the unfathomable story of comb jellyfish and how they can age in reverse. This is what their regenerative ...

Comb jellies, soft-bodied marine creatures that swim by beating rows of cilia, may once have had a hard skeleton. Jef Akst was managing editor of The Scientist, where she started as an intern in 2009 ...

Almost by chance, researchers in Norway found adult comb jellies reverse their development and become larva again when stressed by starvation. It helps them survive because larva eat less than the ...

Some develop into tentacles, for example; others become reproductive organs. Comb jellies may be the most ancient living animal. They have a nervous system and—this shocked specialists—two ...

This brownish-orange comb jelly of the genus Beroe is likely one of the five undescribed species characterized by the team of researchers. Credit must be given to the creator.