Did you know sea turtles can sleep underwater for several hours at a time? This green sea turtle found a calm resting spot beneath the reef, where they can slow their heart rate and hold their breath for up to 4–7 hours while they sleep. They often wedge themselves under coral ledges or into sandy sea beds to stay safe from predators. It’s moments like these that remind me how peaceful and intelligent marine life truly is. The ocean moves in its own rhythm and sometimes, the best thing we can do

Half of the turtle species on Earth are threatened with extinction. On World Turtle Day, let's recognize these special animals and the vital role they play in our planet's ecosystems. | National Geographic