A father and son travel through the mangroves in Barangay San Roque on Bucas Grande Island, Surigao Del Norte, Philippines. These trees in San Roque make up an old growth forest, serving as a vital habitat for biodiversity, and a carbon sink that sequesters huge amounts of carbon from the atmosphere. The area has been designated as an ecotourism site and strict protection zone through the efforts of USAID and local partners, who conducted a study on the value of ecosystem services these mangroves provide.