In 1969, a male sperm whale was killed off the coast of South Africa after surfacing from a dive lasting 117 minutes. Whales' lungs are particularly efficient at taking up oxygen when they breathe air ...

Yet these animals are small compared to something like a sperm whale - so how do they do this ... Increasing pressure shrinks the air in the lungs and by 200 metres deep, both human and whale lungs ...

When humans venture that far down, we’re often encased in a thick layer of titanium, lest our lungs and ear cavities collapse ...

Brian Skerry dives to photograph some of the most elusive animals in the ocean, sometimes on just one breath. Brian Skerry gets a rare opportunity to photograph a social gathering of six sperm ...

A sperm whale stranded on Cuttyhunk Island over the weekend, adding to alarming whale death toll since December. Here's what ...