The Bay of Bengal is a cove that forms the northeastern ingredient of the Indian Ocean. It resembles a triangle in form, and is enclosed on the east by Malay Peninsula, and on the west by India. On the northern pour of the "bay" lies the Bengal region, comprising the Indian state of West Bengal and the country of Bangladesh, thus the name. The southern boundaries arrive at the island country of Sri Lanka, and the Indian Union Territory of Andaman and Nicobar Islands.
The Bay of Bengal occupies a region of 2,172,000 km². It is bordered by India and Sri Lanka to the West, Bangladesh to the North, and Myanmar and the southern division of Thailand to the East. Its southern border extends as an imaginary line from Dondra Head at the southern end of Sri Lanka to the northern angle of Sumatra. A number of huge rivers – Ganges, Brahmaputra, Irrawaddy, Godavari, Mahanadi, Krishna and Cauvery – run into the Bay of Bengal. Among the vital ports are Yangon, Kolkata/Calcutta, Chittagong, Cuddalore, Kakinada, Machlipatnam, Madras, Paradip and Vishakapatnam.