Andaman Sea.

The Andaman Sea is a body of water to the southeast of the Bay of Bengal, south of Myanmar, west of Thailand and east of the Andaman Islands; it is part of the Indian Ocean. It is roughly 1,200 kilometers long (north-south) and 650 kilometers wide (east-west), with an area of 797,700 square kilometers. Its average depth is 870 meters, and the maximum depth is 3,777 meters.

At its southeastern reaches, the Andaman Sea narrows to form the Straits of Malacca, which separate the Malay Peninsula from the island of Sumatra.