Dr Sascha Hooker of the University of St Andrews is studying marine mammal diving behaviour. 'Beaked whales are amazing animals,' she says. 'It is not just the occasional deep dive that we see, but ...

It’s an animal, not a plant—a cousin of sea stars ... I’ve worked for decades as a deep-diving photographer, at first in the Mediterranean Sea, where I learned to dive 30 years ago.

Professional diver Andrew Ryzebol tells PEOPLE exclusively of his risky underwater explorations 200 feet beneath uncharted ...

"For any animal that uses gills for respiration in ... This video spotted a hammerhead shark swimming during a deep dive off the coast of Tanzania. The shark's gills are almost invisible ...

Marine mammals can dive for remarkably long periods because ... it puts them and their physiology amongst some of the most uniquely adapted animals,” McKnight said in a statement.

Take a closer look at the animal kingdom’s smartest species, known for their remarkable problem-solving abilities, communication skills, and emotional intelligence. From dolphins to crows ...

Whales are accomplished divers. The deepest whale dive recorded so far was made by a Cuvier's beaked whale. A 2014 study used satellite-linked tags to follow the dives of eight beaked whales off the ...