Kurusadi Island is situated to the west of Pamban bridge. It is a marine biosphere, a paradise for marine biologists and Nature lovers. It is about 4 kms from Mandapam. Plenty of coral reefs, and marine life like dolphins, sea cows or dugong can be seen in this island.
Scholars from various places come to this island to research and study. Around the island, there are a number of islands. One should approach fisheries department to go to the island. It is about 20 kms from Rameswaram. Kurusadi Island, reveals the richness in biodiversity.