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.

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 ...

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.

Now biologists are on the tail of these deep-diving ... whale remains largely a mystery. The animals spend most of their time at great depths, diving more than 6,000 feet in pursuit of prey ...

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 ...