Gulf of Mannar
 The Gulf of Mannar (Tamil: மன்னார் வளைகுடா) (Sinhala: මන්නාරමි ‌බොක්ක is a large shallow bay forming part of the Laccadive Sea in the Indian Ocean. It lies between the southeastern tip of India and the west coast of Sri Lanka. A chain of low islands and reefs known as Adam's Bridge also called Ramsethu which includes Mannar Island separates the Gulf of Mannar from Palk Bay which lies to the north between India and Sri Lanka.