How big they are: From 5 to 32 feet (1.5 to 10 meters) long, depending on the species Dolphins live in almost every ocean, except most tend to avoid the cold waters in the Arctic and around Antarctica ...

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 ...

Humans do very little when we sleep. This might not seem like a big deal, until you look to the dolphins as they sleep and swim with the pod. Or fur seals, who can sleep while watching out for sharks.

AI-generated summary reviewed by our newsroom. Read our AI Policy. Are you a bear, wolf, lion or dolphin? You may not think any of these wild animals have to do with sleep. However, they actually ...