A traveler checked into one of the most expensive hotel rooms on Earth, an underwater suite in the Maldives costing $18,000 ...

For the first time, scientists have recorded brain activity in a free-ranging, wild marine mammal, revealing the sleep habits of elephant seals during the months they spend at sea. The new findings, ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Northern elephant ...

Elephant seals drift downwards in a "sleep spiral" when deep diving in the ocean, a new study found. Sleeping while deep diving allows the seals to avoid predators, scientists believe. The scientists ...

A team of scientists recorded the brain activity of diving elephant seals in the wild and mapped out the eccentric treks the animals take when they sleep mid-dive. Exactly when and where elephant ...

The surprisingly short shut-eye may be a way for the elephant seal to avoid predators—an intriguing find from the first-ever sleep study on marine mammals in the wild. A baby northern elephant seal ...

During the many months they spend at sea gorging on fish and squid, the massive mammals sleep only about two hours a day. By Annie Roth It long seemed as though African elephants were the champions of ...

Elephant seals sleep about 10 hours a day on the beach, but during months-long foraging trips at sea they average just 2 hours of sleep per day. These 2-month-old northern elephant seals are sleeping ...