Majuli is the biggest river island in the world in the Brahmaputra River, Assam, India and also 1st island district of the country. The island had a total area of 352 square kilometres (136 sq mi). It is recognised by Guinness Book of World Records as World’s Largest River Island. A wetland, Mājuli is a hotspot for flora and fauna, harbouring many rare and endangered avifauna species including migratory birds that arrive in the winter season. Among the birds seen here are the greater adjutant stork, pelican, Siberian crane and the whistling teal. After dark wild geese and ducks fly in flocks to distant destinations.
Netrani (also known as Pigeon Island) is a small island of India located in the Arabian Sea. It is off the coast of Karnataka situated approximately 10 nautical miles (19 km) from the temple town of Murudeshwara in Bhatkal Taluk. Views from above give this island the appearance of being heart-shaped. Netrani is a coral island which has a coral reef with many varieties of coral, butterfly fish, trigger fish, parrot fish, eels and shrimps can be seen here.
3.Great Nicobar Island
Great Nicobar is the southernmost and largest of the Nicobar Islands of India.The island of Sumatra is located 180 km (110 mi) to the south of Great Nicobar. The island covers 921 km2 (356 sq mi) but is sparsely inhabited, with a population of 8067, largely being covered by rainforest and known for its diverse wildlife. The island has several rivers, including the Alexandra, Amrit Kaur, Dogmar and Galathea. There are undulating hills throughout the island, with the main range running in a north-south orientation. Mount Thullier, which is part of this range, has the highest elevation of any point in the Nicobars, at 642 m above sea level.
Baratang Island is an island of the Andaman Islands. It belongs to the North and Middle Andaman administrative district, part of the Indian union territory of Andaman and Nicobar Islands. The island is lying 150 km (93 mi) north from Port Blair.Baratang contains the only known examples of mud volcanoes in India. These mud volcanoes have erupted sporadically, with recent eruptions in 2005 believed to have been associated with the 2004 Indian Ocean earthquake.
Munroe Island is located at the confluence of Ashtamudi Lake and the Kallada River, in Kollam district, Kerala, South India. The island, accessible by road, rail and inland water navigation, is about 25 kilometres from Kollam by road, 38 kilometres north from Paravur, 12 kilometres west from Kundara and about 25 kilometres from Karunagapally.The island village is a tourism destination where one can see the coir retting process, coir weaving, fishing, prawns feeding, migratory bird watch, narrow canals and waterways, coconut farms on the lake shore, lagoons, mangrove plants and the beautiful tiny islands of Pathupara.