One of the biggest mysteries of evolution is how species first developed complex vision. Jellyfish are helping scientists solve this puzzle, as the group has independently evolved eyes at least nine ...

If jellyfish need sleep to keep their nerve nets intact, the need to sleep probably predates the evolution of brains, eyes, and even bodies that are the same on both left and right sides. In ...

Jellyfish are more advanced than once thought, according to a new study. The study has demonstrated that Caribbean box jellyfish can learn at a much more complex level than ever imagined—despite only ...

Jellyfish have thrived for over 500 million years, showcasing a remarkable evolutionary journey. These marine creatures feature a simplistic body structure, which despite its lack of complexity, ...

Fossils often preserve shells, bones, and other hard parts. Soft-bodied creatures tend to disappear without a trace. That’s why a newly identified species discovered near Quebec City is so unusual.

Scary, squishy, cool, brainless, mesmerizing—jellyfish are all of these and a whole lot more. Anatomically they’re relatively ...

Aging gracefully comes naturally to these creatures, which can live for hundreds, and sometimes even thousands, of years Brian Handwerk | Science Correspondent Life is short, the old saying goes, but ...

All over the globe, jellyfish are increasingly abundant. In Thailand, which has long harvested edible jellies by the millions, the race is on to put the stinging drifters on more of the world’s plates ...

An upside-down jellyfish drifts in a shallow lagoon, rhythmically contracting its translucent bell. By night that beat drops from roughly 36 pulses a minute to nearer 30, and the animal slips into a ...