Dolphins can stay constantly alert for more than two weeks by sleeping with only half of their brains, researchers say. These findings suggest how dolphins can keep on the constant lookout for sharks, ...

Dolphins are among the most intelligent and fascinating creatures in the ocean. While their playful nature and advanced communication skills are well-known, one of the most intriguing aspects of their ...

Ever wondered how some animals manage to survive without the luxury of a good night's rest while we humans desperately need our eight hours? The animal kingdom is packed with creatures that seem to ...

Unique signature whistles—akin to personal “names”—join half-brain sleep, 20-mph bursts, 1,000-ft dives, mirror self-recognition, and even tool use on the growing list of dolphin super-skills.

Chronotypes define individual sleep-wake cycles and peak daily energy periods. Aligning routines with chronotype improves sleep quality and daily productivity. Natural light exposure and consistent ...

AI-generated summary reviewed by our newsroom. Read our AI Policy. Chronotypes define individual sleep-wake cycles and peak daily energy periods. Aligning routines with chronotype improves sleep ...