Emilie Le Beau Lucchesi, Ph.D., is a freelance journalist who regularly contributes to Discover Magazine. She reports on the social sciences, medical history, and new scientific discoveries. View Full ...

It's not unreasonable to ask, "Do fish sleep?" After all, when was the last time you actually saw one of these little swimmers taking a snooze? It's hard to tell when a fish is sleeping because they ...

Fish resting habits differ from land mammals. They reduce activity and metabolic rates, with unique sleep patterns among species. Environmental factors affect their sleep, and light influences their ...

A protective mucous cocoon surrounds this parrotfish as it sleeps in Australia's Great Barrier Reef. This layer of protection helps fend off predators so parrotfish can get a good night's rest.

Tom has a Master's degree in Journalism. His editorial work covers anything from archaeology and the environment to technology and culture. Tom has a Master's degree in Journalism. His editorial work ...

Zebrafish sleep just like humans according to new research which suggests the way we snooze evolved more than 450 million years ago. Scientists say our ancient fish-like ancestors developed ...