The North American continent stretches over 9.5 million square miles, and is home to more than 500 million people, who share it with hundreds of thousands of species of mammals, birds, insects, and plants -- many of them extraordinary, unforgettable, and unique. With 150,000 miles of coastline, North America also has the longest and most abundant shores of any continent on Earth. In the stunning seven-part series from Discovery Channel, renowned nature...