An upside-down jellyfish drifts gently in a shallow lagoon. At first glance, it looks like it’s just floating, but scientists ...
A new Nature Communications study has tracked these lulls in cassiopea jellyfish, which belong to a 500 million year-old ...
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Scientists found that jellyfish sleep 8 hours a night and take naps too
Jellyfish sleep around eight hours a night, take short daytime naps, and compensate for lost rest,all without having a brain. These behaviors, revealed in a new study, suggest sleep may be far more ...
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 ...
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