The coastal islands found in India have been divided into two parts:
1. Alluvial islands
2. Rocky islands
1. Alluvial Islands: Alluvial islands are found on the eastern coast of India. Apart from Chilka Lake near Bhasara and Mandala, all the islands are made of alluvial soil. The important alluvial islands are Sagar island situated at the mouth of River Hooghly, Shaurt island in the Delta of Mahanadi and river Brahmani, and at its mouth, Wheelar island. Ramsetu between India and Sri Lanka, Pamban island of Rameswaram, Crocodile island situated in the valley of of Mannar and Kota island.
2. Rocky Islands: Such islands are found on the western coasts out which Henry, Canary, Buchar, Elephanta, Pigeon near. Mumbai and Piram, Bhainsala etc. at the coast of Kathiawar are important islands.
