This addition to the award-winning Nature Series from PBS travels to Cuba to showcase its beautiful and diverse wildlife, and examines the effect of tourism and human interference on the ecosystem., The Season 29 premiere explores the natural splendor of Cuba, including its tropical forests, wetlands, desert coasts and extensive coral reefs, as well as the island nation’s wildlife, which includes bats, owls, hummingbirds, crocodiles and sea turtles. The hour also explores the conservation work of Cuban scientists, some of whom make $25 a month, and American marine biologist David Guggenheim, who’s studying Cuba’s thriving coral reefs., Cuba’s ecosystems are among the most untouched in the Caribbean. But political changes mean that Cuba’s pristine environment could be at risk.