Turns out jellyfish and sea anemones – among the ancient creatures with a nervous system instead of a brain – have a very similar sleeping routine to our own. A new study published in Nature ...

A ‘massive smack’ of lion’s mane jellyfish has appeared in Port Phillip Bay, but experts say fears of a ‘jellygeddon’ are overblown ...

Sleep is one of life’s most universal behaviors. Despite its ubiquity, it’s also one of the most mysterious. Humans spend about a third of their lives with their eyes closed and their brains in states ...

While the jellyfish and sea anemone are awake, DNA damage accumulates in their nerve cells and when they doze, that damage is ...

Thousands of lion’s mane jellyfish have appeared along Melbourne’s south-eastern beaches, with Dr Vicki Karalis urging ...

In a towering aquarium in a darkened laboratory, moon jellyfish (Aurelia aurita) hover as if floating in space. The glow of neon lights illuminates their translucent, bell-shaped bodies as they expand ...

Jellyfish can be found in every ocean and seacoast in the world. Georgia’s coast is no exception, and August is peak time for the gelatinous creatures that lack brains, hearts, bones and even blood.

Brainless upside-down jellyfish, like this one in its natural habitat near Eilat, Israel, spend about one-third of their time asleep. Gil Koplovitch Why do animals—including humans—sleep? This ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. Some specimens of the jellyfish subspecies Botrynema brucei ellinorae have knobs on their bells ...

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, ...

In a towering aquarium in a darkened laboratory, moon jellyfish (Aurelia aurita) hover as if floating in space. The glow of neon lights illuminates their translucent, bell-shaped bodies as they expand ...