Great Blue Wild

Known for jaw-dropping encounters with giant Pacific manta rays, hammerhead schools, dolphins and tiger sharks, the Socorro Islands are a true Mexican jewel. (S1, ep 2)

Dive into the crystal clear waters of Cozumel, a lush Caribbean paradise that hides the world's largest subterranean underwater cave system. (S1, ep 5)

The Belize Barrier Reef is the second-largest coral reef in the world, and its waters are home to a remarkable marine ecosystem that includes rare and exotic fish. (S1, ep 4)

Across the 3,000 scattered islands of the Bahamas lie incredible natural wonders, from giant pine forests to secret labyrinths of underwater caves. (S1, ep 3) Also in UHD.

Forty miles north of Honduras lies the Mesoamerican Reef - a pristine home for an abundance of amazing marine wildlife and lush vegetation. (S1, ep 6)

Cocos Island is a gem among Costa Rica's national parks. Beyond its pristine rainforest lies a marine wilderness filled with life, from sharks to sea turtles. (S1, ep 1) Also in UHD.