Tangier Island, Virginia crab shanties where fishermen make a living selling from the Chesapeake Bay. The crab shanties, where fishermen gather soft-shell crabs are built on pilings in Tangier's only harbor. The island, one of the most isolated communities in America, is disappearing as a result of climate change. Population is now under 450. The shrinking island has lost an average of 8 acres per year since 1850. Estimates are that the island will be uninhabitable 50 years from now.