The Sulu Sea is a body of water located in the southwestern region of the Philippines. It is bordered by the provinces of Palawan, Basilan, Sulu, and Tawi-Tawi. The Sulu Sea is an important part of the country's maritime history, as it was once a major trading route for Chinese, Indian, and Arab merchants. It is also home to a variety of marine life, including dugongs, sea turtles, and various species of fish.