This website use cookies and similar technologies to improve the site and to provide customised content and advertising. By using this site, you agree to this use. To learn more, including how to change your cookie settings, please view our Cookie Policy
Pocketmags Digital Magazines
Pocketmags Digital Magazines

Do Jellyfish Dream of Electric Sheep?

Figuring out if brainless creatures need their Z’s can lead to sleepless nights for researchers


WE’RE INTIMATELY FAMILIAR with what a sleeping human looks like, or a sleeping dog or bird. But what does a sleeping ant look like—or a sleeping jellyfish? Despite spending a third of our lives asleep, we still haven’t cracked all its secrets, but becoming more adept at recognizing the state in other species could explain why sleep is so important to us.

Sleep—or at least some activity that looks an awful lot like it—is pretty common for all living creatures: among not just humans and our close relatives but also birds, reptiles, fish, insects and even a microscopic worm, called Caenorhabditis elegans, found in many science labs.

Purchase options below
Find the complete article and many more in this issue of Newsweek International - 13 October 2017
If you own the issue, Login to read the full article now.
Single Issue - 13 October 2017
Or 499 points
Annual Digital Subscription
Only $ 0.67 per issue
Or 3399 points
Monthly Digital Subscription
Only $ 0.94 per issue
Or 399 points

View Issues

About Newsweek International

DOES GOD BELIEVE IN TRUMP? Inside this issue we feature the amazing story The Donald's rebirth from sinner to saviour of the Christian right.