Jellyfish and sea anemones are curious creatures: these organisms evolved without a brain and, as scientists discovered only in the past few years, don’t need one to sleep. The animals do, however, ...

Scientists reveal new lineages of giant sea anemones in Japan and their surprising associations with anemonefish. Researchers at the Marine Eco-Evo-Devo Unit and Marine Genomics Unit at the Okinawa ...

Mammals with brains sleep to store memories and clear metabolic waste from the brain. It is like stopping a computer to run updates. But jellyfish without brains also sleep eight hours a day. When ...

A new study from the multidisciplinary brain research center at Bar-Ilan University found that jellyfish and sea anemones were the first to present one of sleep’s core functions. They don’t snore, and ...

A new study from Bar-Ilan University shows that one of sleep's core functions originated hundreds of millions of years ago in jellyfish and sea anemones, among the earliest creatures with nervous ...

A team of researchers has uncovered a direct genetic link between fluorescence and color in sea anemones -- those soft and tentacled tide pool creatures often encountered by beachgoers. For the first ...

The clownfish-anemone living arrangement is one of the most widely recognized examples of symbiosis. Researchers have made a breakthrough in understanding how anemonefish can live safely among sea ...

A 2023 marine heat wave in the central Red Sea caused 100% of monitored sea anemones to bleach, followed by the death of 94-100% of clownfish and 66-94% of the anemones across three surveyed reefs.