Mumbai Harbour (Marathi: मुंबई बंदर
Mumba'ī bandar), or
Front Bay (sometimes referred as Mumbai Harbour), is a natural deep-water
harbor in the southern portion of the
Ulhas River estuary. The narrower, northern part of the estuary is called
Thane Creek. The harbor opens to the
Arabian Sea to the south. The historical island of Elephanta is one of the six islands that lie in the harbor.