News tagged with dolphins

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Fishermen kill 30 more dolphins in Taiji

Fishermen in the small Japanese town of Taiji killed more than two dozen striped dolphins on Thursday, campaigners said, as global outrage over the slaughter grows.

Jan 23, 2014
3.4 / 5 (5) 0

Dolphins get a lift from delta wing technology

We can only marvel at the way that dolphins, whales and porpoises scythe through water. Their finlike flippers seem perfectly adapted for maximum aquatic agility. However, no one had ever analysed how the animals' ...

Jun 26, 2009
3.8 / 5 (4) 0

Satellites, DNA and dolphins

Using DNA samples and images from Earth-orbiting satellites, conservationists from Columbia University, the Wildlife Conservation Society, the American Museum of Natural History, and Fundación AquaMarina, ...

Apr 30, 2010
5 / 5 (3) 0

Dolphins use double sonar

Dolphins and porpoises use echolocation for hunting and orientation. By sending out high-frequency sound, known as ultrasound, dolphins can use the echoes to determine what type of object the sound beam has ...

Jun 07, 2011
5 / 5 (3) 11

Autonomous robot maps ship hulls for mines

For years, the U.S. Navy has employed human divers, equipped with sonar cameras, to search for underwater mines attached to ship hulls. The Navy has also trained dolphins and sea lions to search for bombs ...

Jul 17, 2012
5 / 5 (3) 1 | with audio podcast