Elephant Seals Get By On Two Hours Sleep, Underwater 04/28/2023 WPScien The world record for the least sleep in a day among mammals goes to elephant seals, according to new research. … Click to share on Telegram (Opens in new window)Click to share on Facebook (Opens in new window)Click to share on WhatsApp (Opens in new window)Click to share on Pinterest (Opens in new window)Click to share on Mastodon (Opens in new window)Click to share on Nextdoor (Opens in new window)Click to share on X (Opens in new window)