Ulugan is a deep channel on the northwestern coast of Puerto Princesa. Tres Marias, a cluster of three islets, stand guard at the mouth of the bay. Inside the bay is Rita Island, another popular dive spot. Mangrove forests abound in river deltas, while dense vegetation packs gently rolling hills in the distance. Modest lodging is available at the nearby village of Macarascas.
The Ulugan Bay, 50 km or an hour drive from Puerto Princesa City, is a wide bay with a small mouth to the South China Sea, embedded in a lovely surrounding, towered above by the steep high limestone rocks of the Saint Paul’s National Park and the famous Subterranean River. Within less than one hour driving distance or by boat, there are many of interesting and spectacular places for sports, islands and beaches for swimming, sailing, boating, wind surfing, water skiing and beach combing, caves, water falls, rivers and rapids for kayaking, coral reefs for diving and snorkeling, high steep mountains for trekking and climbing.
The Ulugan Bay, still part of the City of Puerto Princesa, is close to Sabang and the Underground River. In stormy weather in the South China Sea the Ulugan Bay is a safe zone and sailing yachts are using the bay as a shelter. It is planned by the City of Puerto Princesa to develop the whole bay to a first class tourist area, based on eco-tourism.