The biologist had just come from the first floor, where tanks held a colony of gelatinous comb jellies. The blob was bigger ...

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 ...

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 ...

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 ...

One of the planet’s most notorious invasive species is a comb jelly, Mnemiopsis leidyi. A native of the east coast of North and South America, the comb jelly is capable of eating ten times its ...

How many species of jellyfish are there? Jellyfish are sometimes called sea jellies. They belong to a group called Medusozoa which is divided into four classes: Hydrozoa, Scyphozoa, Cubozoa and ...

The fossil, an eight-armed swirl named Eoandromeda after the galaxy Andromeda, is believed by researchers to be the ancestor of modern comb jellies, which populate oceans worldwide and swim using rows ...

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.

For example, this picture of a Diplulmaris antarctica jellyfish shows it feeds on comb jellies, with a Beroe present in its stomach, whereas numerous hyperiid amphipods (small parasitic ...