Cubas enforced isolation has resulted in the unlikeliest of marine reserves: a huge, rambling archipelago known as Jardines de la Reina, or Gardens of the Queen. Stretching around 140 miles along the southern coast of Cuba, its one of the longest barrier reef systems in the world. Get an up-close look at Fidel Castros diving playground, a forgotten ocean paradise unseen for half a century, and witness exotic species rarely seen elsewhere in the region. Its the lost jewel of the Caribbean, but how long can this pristine wilderness survive?