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Elephant seals drift off to sleep while divin

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 show that while elephant seals may spend 10 hours a day sleeping on the beach during the breeding season, they average just 2 hours of sleep per day when they are at sea on months-long foraging trips. They sleep for about 10 minutes at a time during deep, 30-minute dives, often spiraling downward while fast asleep, and sometimes lying motionless on the seafloor. ....

United States , Monterey Bay , Monterey Canyon , Taiki Adachi , Pacific Ocean , Jessica Kendall , Daniel Lozano , Terrie Williams , Patrick Robinson , Oleg Lyamin , Alexei Vyssotski , Roxanne Beltran , Theresa Keates , Rachel Holser , Office Of Naval Research , Uc San Diego Scripps Institution Of Oceanography , Neurophysiology Lab , National Science Foundation , Julie Pitman At Sleep Health , Long Marine Laboratory , Ritika Mukherji At University Of Oxford , University Of Zurich , Daniel Crocker At Sonoma State University , Swiss Federal Institute Of Technology , Institute Of Marine Sciences , Jessica Kendall Bar ,