Great Blue Wild

Dubbed "the most beautiful island in the world" by Jacques Cousteau, Cocos Island is a gem among Costa Rica's national parks.

A wild and remote chain 400 kilometres south of Cabo San Lucas in the eastern Pacific, the Socorro Islands have been called the Mexican Galapagos.

The islands of the Bahamas are ringed with lush coral, underground cave systems and plunging barrier reefs.

More than 200 caves play host to an unmatched array of marine life and coral formations in this underwater kingdom 40 kilometres from Belize City.

Clear waters, deep reefs, dangerous caves and tunnels draw divers to the island of Cozumel on Mexico's east coast.