The Deccan plateau has a coastal strip in the east and west. The west coastal plain stretches from Gujarat to Kerala. The coastal strip along the Arabian Sea in the west is known as Konkan in the north and Malabar in the south of Goa. There are numerous estuaries-the primary ones being those of the Narmada and Tapi in Gujarat. It is blessed with cavernous natural harbours like Mumbai and Marmagao. Towards the south, the coast is interspersed with salt water lakes called lagoons. There are also sand bars or spits in their mouths. The coast is celebrated for its tranquil backwaters. The coastal strip along the Bay of Bengal is wide and more level, differing from the western strip. The coastal strip, if not for the deltas, is rocky and extremely cut apart by small, but fast flowing rivers.