<Tr> <Th> Average depth </Th> <Td> 2,600 m (8,500 ft) </Td> </Tr> <Tr> <Th> Max . depth </Th> <Td> 4,694 m (15,400 ft) </Td> </Tr> <P> The Bay of Bengal (Bengali: বঙ্গোপসাগর (bɔŋgopoʃagoɾ)) is the northeastern part of the Indian Ocean, bounded on the west and northwest by India on the north by Bangladesh, and on the east by Myanmar and the Andaman and Nicobar Islands of (India). Its southern limit is a line between Sri Lanka and the northwesternmost point of Sumatra (Indonesia). It is the largest water region called a bay in the world . There are Countries dependent on the Bay of Bengal in South Asia and Southeast Asia . </P> <P> The Bay of Bengal occupies an area of 2,172,000 square kilometres (839,000 sq mi). A number of large rivers flow into the Bay of Bengal: the Ganges - Hooghly, the Padma, the Brahmaputra - Jamuna, the Barak - Surma - Meghna, the Irrawaddy, the Godavari, the Mahanadi, the Brahmani, the Baitarani, the Krishna and the Kaveri . Among the important ports are Chennai, Chittagong, Colombo, Kolkata, Mongla, Paradip Port, Port Blair, Tuticorin, Visakhapatnam and Yangon . Among the smaller ports are Dhamra, Kakinada and Payra . </P>

Is bay of bengal a sea or ocean