How Do Dolphins Sleep?

All mammals sleep, and dolphins are no exception. How do they do? Dolphins information: http://www.dolphins-world.com/ The Portal of Life on Earth: http://bioexpedition.com/

All mammals sleep, and dolphins are no exception. How do they do? Dolphins information: http://www.dolphins-world.com/ The Portal of Life on Earth: http://bioexpedition.com/ Less