Kulassian is an island in the Philippines under the jurisdiction of Pangutaran in the province of Sulu. The island lies within the Sulu Sea.

Kulassian has an approximate area of 17.18 square kilometers or 6.63 square miles, and roughly has a coastline length of 17.16 kilometers or 10.66 miles. The island is situated at approximately 6.4155, 120.6915. Elevation at these coordinates is estimated at 7 meters or 22.97 feet above mean sea level.


  1. Land area figures and coastline length were calculated from OpenStreetMap data.
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