Dolphins and whales use sound to communicate, navigate and hunt. New research suggests that the collections of fatty tissue that enable toothed whales to do so may have evolved from their skull ...

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Rescue Crew and Stranded Dolphins: IFAW personnel respond to common dolphins in Wellfleet, Mass., a global hotspot for mass strandings of dolphins. Partnerships and collaborations between researchers ...

Echolocation is a type of sonar used by two kinds of mammals, bats and whales. Bats are mammals that often fly in the dark. Some bats use sonar to navigate (find their way) and to find prey. Whales ...

Scientists studying the sperm whales that live around the Caribbean island of Dominica have described for the first time the basic elements of how they might be talking to each other, in an effort ...

Biologists discovered killer whales and dolphins working together to hunt salmon, a behavior never before documented in this ...

Researchers say the behavior has never before been observed in the population. Watch dolphins and killer whales hunt together.

Genetic analysis finds evidence suggesting that acoustic fat bodies in the heads of toothed whales were once the muscles and bone marrow of the jaw. Dolphins and whales use sound to communicate, ...