The Cagayan Ridge Corridor, is located in the middle of Sulu Sea , east-southeast of Palawan . The most famous reef along this ridge is the Tubbataha Reef National Marine Park (TRNMP). Declared as a World Heritage Site, this 33,200-hectare park boasts of diverse species of corals, reef fishes, algae and seagrasses complemented by aggregations of large megafauna like sharks and cetaceans. The islets on the two large atolls are known sea turtle nesting sites and an important feeding and breeding ground for seabirds.

Other known diving destinations along the ridge are the Jessie Beazely, Basterra, Bancauan and Bancoran and inhabited islands like Cawili, Arena, Calusa and Cagayancillo.

Priority activities in the corridor focuses on establishing and managing marine protected areas (MPAs), strengthening of enforcement capabilities and a corridor-wide information and awareness campaign.