1. Sea turtles lillian

3. A sea turtle

5. Sea turtles are almost always submerged but breathe air. With a single explosive exhalation and rapid inhalation, sea turtles can quickly refill their lungs when they surface. Their lungs have adapted to permit rapid exchange of oxygen and to avoid trapping gasses during deep dives. During routine activity green and loggerhead turtles dive for about 4 to 5 minutes and surface to breathe for 1 to 3 seconds.