Life around the ocean surface can appear strangely similar from a distance. A dorsal fin cuts through the water, a dark body rises briefly to breathe,.

Picture a dolphin diving toward the seafloor with something odd on its nose. It is not a shell or a fish. It is a sea sponge. The dolphin isn’t playing; it’s using the sponge as a diving mask: a clear ...

The U.S. Navy's Marine Mammal Program in San Diego trains bottlenose dolphins and California sea lions to find underwater ...

At first glance, dolphins, sharks, and whales all cut similar figures as they glide through the ocean: sleek fins, smooth ...

“Dolphins naturally possess the most sophisticated sonar known to science. Mines and other potentially dangerous objects on ...