Sea turtle taking a nap on an algae pillow. Sleeping sea turtles can stay underwater for 4–7 hours. https://t.co/08NN2MlGaD https://video.twimg.com/ext_tw_video/1794607859826663424/pu/vid/avc1/480x640/M4R03fK2abpsTNFJ.mp4?tag=12