The Mesoamerican Reef: Overfishing and tourism have landed much of this formerly pristine reef in jeopardy, putting its sharks and turtles in grave danger. (S1, ep 4) [S]
Monterey Bay Marine Sanctuary: Head beneath the waves for a colourful look at the US's largest marine sanctuary - home to 525 species of fish and a huge, underwater kelp forest. (S1, ep 3) [S]
Florida Keys National Marine Sanctuary: Follow efforts to protect three important Florida Keys habitats, including crucial coral reefs and the swampy homes of endangered birds. (S1, ep 2) [S]
Bonaire National Marine Park: Dive into the Caribbean home of thriving reefs, endangered sea turtles, sprawling mangroves and colourful marine life. (S1, ep 1) [S]
The Mesoamerican Reef: Overfishing and tourism have landed much of this formerly pristine reef in jeopardy, putting its sharks and turtles in grave danger. (S1, ep 4) [S]