The Bay of Bengal is the northeastern region of the Indian Ocean, bordered by India on the west and northwest, Bangladesh on the north, and Myanmar and India’s Andaman and Nicobar Islands on the east. Its southern boundary is a line drawn from Sangaman Kanda in Sri Lanka to the northwesternmost point of Sumatra in Indonesia. It is the world’s largest bay. South and Southeast Asia are dependent on the Bay of Bengal. During British India’s existence, it was known as the Bay of Bengal, after the old Bengal region. The Port of Kolkata was the entryway to Crown power in India at the time. Along the bay lie Cox’s Bazar, the world’s longest sea beach, and Sundarbans, the world’s biggest mangrove forest and the natural habitat of the Bengal tiger.