bay of bengal is a sea or ocean
Bay of Bengal The Bay of Bengal (Bengali: বঙ্গোপসাগর [bɔŋgopoʃagoɾ]) is the northeastern part of the Indian Ocean, bounded on the west and north by India and Bangladesh, and on the east by Myanmar and the Andaman and Nicobar Islands (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.
Ocean An ocean (from Ancient Greek Ὠκεανός, transc. Okeanós, the sea of classical antiquity[1]) is a body of saline water that composes much of a planet's hydrosphere.[2] On Earth, an ocean is one of the major conventional divisions of the World Ocean. These are, in descending order by area, the Pacific, Atlantic, Indian, Southern (Antarctic), and Arctic Oceans.[3][4] The word sea is often used interchangeably with "ocean" in American English but, strictly speaking, a sea is a body of saline water (generally a division of the world ocean) partly or fully enclosed by land.[5]