Off the town of Oslob near Cebus southern tip is Sumilon Island it has a Marine Sanctuary, nature park,lagoons,caves, boating cottages. It is 125 kilometers from Cebu City and is in close proximity to Dumaguete.
Unspoilt beaches of pure white sands and crystal clear waters make this a sun worshipper and beach lovers paradise. The island has an area of 24 hectares and is surrounded by crystal clear waters with varying aquamarine hues. It is the first marine protected area in the Philippines and was made a fish sanctuary in 1974 under the guidance of Siliman University Marine Reserve. During dives, one will find varied marine species and even occasional sightings of black tip sharks. Its Sandbar is well known for its changing shapes and shifting locations around the island, depending on the season. On the island, there is a natural lagoon teeming with high mangroves. There are also natural caves where fishermen used to seek refuge. On the southside, a lighthouse rests on a protected tree park. Beside it is a “Baluarte”, a historical watchtower built as part of a warning system to thwart slavers and marauders in the 19th century.