A bottlenose dolphin who blocks coral reef crevices with sea sponges to ensnare her prey features in the BBC's Blue Planet ...

Thought to be some of the smartest animals on Earth, bottlenose dolphins send messages to one another in many different ways. They squeak, squawk and use body language—leaping as high as 20 feet in ...

Watch the video to see why these animals became part of the U.S. Navy operations in the first place. For decades, the Na ...