Toothed whales use sound to find their way around, detect objects, and catch fish. They can investigate their environment by making clicking sounds, and then decoding the "echoic return signal" ...

Researchers have identified ginkgo-toothed beaked whales alive at sea for the first time after years of searching, and in doing so solved the mystery of an odd echolocation pulse in the North Pacific.

In the ocean’s abyss, deep-diving whales use echolocation to hunt in pitch dark. Emitting sounds that bounce off objects gives the whales a clear picture of their surroundings. “More often than any ...

Deep-diving toothed whales wash up dead with stomachs full of plastic and prey alike. Their built-in sonar likely can’t tell the difference. Two adult sperm whales swim side by side in Dominica. The ...

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 ...