The Balabac Strait is one of the straits that connects the South China Sea with the Sulu Sea. It separates Balabac Island (Palawan province), Philippines, from Balambangan and the Banggi Islands north of Borneo that are a part of Malaysia's Sabah state. The strait is about 50 km wide with a maximum depth of around 100 m. It was therefore likely to have been below sea level before the last ice age and archaelogica; records indicate that there was an exchange of flora and fauna such as the Bornean tiger between Borneo and the Palawans.