Seals evade predators by only sleeping two hours a day, on deep dives
How would you be able to sleep if you were surrounded by predators who might eat you as soon as you nodded off? Well, a new study shows that elephant seals manage it by only sleeping two hours a day, and doing so deep in the ocean.Continue ReadingCateg… Continue reading Seals evade predators by only sleeping two hours a day, on deep dives