Robert Croft, who has died aged 91, was a US Navy diving instructor whose record-breaking feats of deep diving in the 1960s ...

Hammerhead sharks are able to deep dive to frigid, near-freezing waters to catch rare prey. But scientists have long been confused about how the cold-blooded animals survive such cold waters. A new ...

Scientists used underwater sound recordings to reconstruct 3D dive and hunting behavior of elusive beaked whales in the Gulf ...

If you've never heard of free diving, imagine this. Launching yourself hundreds of feet into the sea with little more than a mask, a If you've never heard of free diving, imagine this: launching ...

Add Yahoo as a preferred source to see more of our stories on Google. Goose-beaked whales (Ziphius cavirostris) hold the record for deepest dive of any marine mammal, and researchers hope that ...

The US Navy recently completed tank tests of a new deep-diving suit called the Deep Sea Expeditionary with No Decompression (DSEND) system that is light and flexible, yet maintains sea-level internal ...

For three years, Pennsylvania-born scuba diver Chris Donnelly prepared for the underwater expedition of a lifetime: a journey to the SS Andrea Doria. The so-called “Mount Everest of Shipwrecks,” it’s ...

For deep-diving mixed-gas divers, it's far worse. Routinely diving below 130 ft (40 m), the divers are always in pitch darkness, relying on work and helmet lights, and they are tethered to the surface ...