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 ...

Marine mammals are sentinels of the sea. When dolphins and whales show signs of stress or illness, it often signals deeper problems in the ocean ecosystems we all depend on. But assessing the health ...

Dolphins live in almost every ocean, except most tend to avoid the cold waters in the Arctic and around Antarctica. Some also ...