The presenter travels 1,500 miles to the San Juan Islands in Washington State, just off America's North West Pacific coast, on the border with Canada. There are more than 100 islands, mostly uninhabited. From the San Juan Islands, Martin travels down America's West coast to visit the Channel Islands National Park, which is known as `America's Galapagos' because of its unique wildlife. Later, Martin takes a 2,000-mile journey across the States to Louisiana, where he visits Avery Island and Delacroix Island.

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Documentary