Unisan Island

Unisan Island is a small island located in southernmost part of Nueva Valencia, Guimaras and beside Malingin Island in the Philippines. It is the largest island in the Unisan Islets.

Guimaras Oil Spill
In August 2006, the Guimaras oil spill occurred. The 988-ton M/T Solar 1, chartered by Petron (the Philippines’ largest oil refinery), was carrying 2.41 million litres of bunker fuel sank 17 km off the island's southern coast, contaminating 24 km2. The Philippine Coast Guard called this the worst oil spill in the country's history. According to officials, 1000 ha of mangroves were affected, including parts of the Taklong Island National Marine Reserve.