The freediving champions of the dolphin world

For the first time, researchers have explored the physiological adaptations that enable different populations of the same species of dolphin to vary in diving ability by almost 1000m. The research, published in two complementary ...

Diving dolphins are exhalation champions

Every air-breathing marine mammal faces a multitude of challenges as it dives beneath the waves: carbon dioxide and nitrogen accumulation in the blood can cause intoxication and decompression sickness, while low internal ...

'Bends' study shows how mammals make mega-dives

Scientists in California have shed light on a marine mystery: how diving mammals can hunt for food at great depths without getting the "bends," according to a new study.

'Natural causes' at fault for Peru dolphin deaths: officials

Nearly 900 dolphins that washed up along Peru's northern coast since the start of the year died of natural causes, a top official said Tuesday, citing a government report that failed to convince environmental activists here.

Peru says 5,000 birds, nearly 900 dolphins dead

The Peruvian government said Wednesday that 5,000 birds, mostly pelicans, and nearly 900 dolphins have died off the country's northern coast, possibly due to rising temperatures in Pacific waters.

Study examines how diving marine mammals manage decompression

Any diver returning from ocean depths knows about the hazard of decompression sickness (DCS) or "the bends." As the diver ascends and the ocean pressure decreases, gases that were absorbed by the body during the dive, come ...

Stranded dolphins exhibit bubbles, and ability to recover

Scientists know that the blood and tissues of some deceased beaked whales stranded near naval sonar exercises are riddled with bubbles. It is also well know that human divers can suffer from bubbles-induced decompression ...

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