Gulf of Thailand

The Gulf of Thailand, long known as the Gulf of Siam, is a shallow sea between the Malay Peninsula and the mainland of Southeast Asia. Rivers including the Chao Phraya flow into its northern reaches, carrying fresh water and sediment from the plains. Its coasts encompass the shores of Siam, Cambodia and the Mekong delta. Seasonal monsoon winds influence the waters and have long shaped travel across the gulf.