Sea turtle taking a nap on an algae pillow. Sleeping sea turtles can stay underwater for 4–7 hours. https://t.co/7dcNdAs0Gi https://video.twimg.com/ext_tw_video/1829491239051243521/pu/vid/avc1/480x640/d7sbMpwa10xlO0Nw.mp4?tag=12