Apo Reef Natural Park

Apo Reef Natural Park is a protected marine natural park off the west coast of Sablayan in Occidental Mindoro, Philippines. Covering 27,469 hectares, it contains the largest contiguous coral reef system in the Philippines and the second largest in the world. It encompasses Apo Reef, Apo Island and Cayos del Bajo Tinangtang, and is noted for exceptional marine biodiversity, clear waters, white sand cays and a historic lighthouse. It is on UNESCO's Tentative List.

Visitors can expect a remote offshore reef system accessible only by boat, typically 2-3 hours from Sablayan town. The park features a vast lagoon, shallow coral gardens, steep drop-offs, and two small islands with white sand, mangroves and a historic lighthouse on Apo Island. Activities center on scuba diving and snorkeling in clear water with diverse corals and reef fish, plus birdwatching, photography and overnight camping at the designated area near the ranger station. There are no shops or restaurants on the reef.