Risso’s dolphins are deep-diving aquatic mammals that typically swim in groups of 10 to 30 individuals. But late last month, ...

Photographer Laurent Ballesta dived as deep as 230 feet to get ... are the most southerly breeding mammal in the world. The preparations for each day’s dive take about as long.

Despite the extreme conditions, these whales manage to hunt two kilometres deep, surviving on a single breath for near to an hour, many times each day. Marine mammals as a group are accomplished ...

Marine biologists at the University of California Santa Cruz have tagged thousands of northern elephant seals with smart ...

A rare strap-toothed whale has died after an attempted stranding on East Clive Beach on Wednesday. Locals spotted two of the ...

The deepest recorded dive was 2,992 metres, breaking the record for diving mammals. Experts have suggested that this dive was unusually deep for this species. A more normal depth would be 2,000 metres ...

The great sperm whale, which is found all over the world, is the deepest diving mammal, largest toothed whale and has the biggest brain of marine mammals compared to its body size.

Sperm whales, which are one of the deepest diving mammals in the world, can grow to up to 18.3m (60ft) long, and hunt large squid. Mr Dodd said other sightings this year in the Minch, the stretch ...