Sleep may have evolved to help reduce DNA damage in nerve cells long before they became centralized in the brain, a study ...

Jellyfish and sea anemones are curious creatures: these organisms evolved without a brain and, as scientists discovered only ...

Experts found that these sea creatures sleep for at least 8 hours a day, a duration often considered ideal for human sleep.

Scientists already knew that the pair of shallow coastal ocean dwellers keep very different schedules of downtime: The ...

It turns out sleeping isn’t just about resting your eyes, as a new study found that even ancient creatures without eyes — or ...

A new study from Bar-Ilan University shows that one of sleep's core functions originated hundreds of millions of years ago in ...

With increased DNA damage from UV radiation or other reasons, the researchers also observed the jellyfish and sea anemones ...

Lurking in the deep sea is a marine creature thought to be one of the world's largest sea anemones. But the animal, which has tentacles measuring more than 6 feet long, isn't an anemone but rather the ...

Evolutionary and developmental biologists have discovered that sea anemones display a genomic landscape with a complexity of regulatory elements similar to that of fruit flies or other animal model ...

Studying ancient sea creatures’ snoozing habits could shed light on the origins of sleep.