Northern elephant seals can spend as much as eight months at sea during migrations, usually underwater for the entire time. A study in Japan led by Yoko Mitani of Hokkaido University found that theseseals sleep for 12 minutes at a time while descending toward the ocean floor, with some even...
herbal teas, especially those containing chamomile or valerian root, are a good alternative. Herbal tea is another natural sleep aid, andchamomileandvalerian roothave been