We're off. To discover some of the most heavenly islands on earth--we'll explore the native wildlife, large--and small and--make some surprising discoveries, in Key West. Locals call this paradise on earth, and all the visitors seem to agree. Because once you arrive in Key West, you never want to leave. Key West is the last stop in the chain of coral keys called 'the straits of Florida.' But it isn't just the southernmost city in the continental...