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 ...

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 ...

Despite their name, killer whales (orcas) are actually dolphins.

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 ...