kurusadai islands have endanged marine species. it is a favorite place for aquatic researches and marrine specilists. this islands is also famous for coral reefs.kurusumali islands is a famous tourist spot. the main attractions here is dolphins and sea cows. the unique feature of this islands is that availability of living fossle namely balanoglossus organisms. another asset in this island is sea anemone. kurusadai islands have number of aquatic species such as statfish, algae, sponges ,crabs and sea cucumbers etc. for the well being of tourist , so many hotels and guest houses are functioning here. this island is located 20 km away from rameswaram.