High Quality Content by WIKIPEDIA articles! Panay Gulf is an extension of the Sulu Sea, reaching between the islands of Panay and Negros in the Philippines. The gulf contains the island-province of Guimaras and extends into the Santa Anna Bay between Panay and Guimaras and into Guimaras Strait, between Guimaras and Negros. Guimaras Strait connects Panay Gulf with the Visayan Sea.