The Nature Conservancy - Caribbean Office. The Caribbean is one of the world’s most biologically diverse marine regions. Home to iconic wildlife and vulnerable coastal communities, the region's once abundant ocean, coasts and coral reefs have suffered alarming decline. For more than 40 years, TNC has been protecting the breathtaking beauty that makes the Caribbean the unique paradise that it is and the resources that sustain the millions who live there. Visit our website for information about our work and how to visit or get involved.