Protected areas are the cornerstones of conservation; they are the places where the full functioning of ecological processes is allowed to occur, with benefits that spill out into the surrounding seascapes, landscapes and communities. But protected areas are under constant pressure to demonstrate their economic value and have thus suffered reductions in area and levels of protection. Conservation can be accomplished by showing the affordability and substantial benefits of protected areas. CSF’s Protected Areas program provides training for park managers, advocates and inhabitants, as well as economic analyses including revenue strategies, financing plans, economic valuation, and economic impact analyses to support the effective design and use of parks and reserves. CSF envisions a world where policy-makers understand the value of protecting the planet’s most biodiverse marine and terrestrial ecosystems, a world in which protected areas are well-funded, well-managed, used by the public, and expanding.