Wandoor, Andaman Islands
Average Price: $ 1 per person
Mahatma Gandhi Marine National Park at Wandoor encompasses 281 sq km that include 15 uninhabited islands and the surrounding sea. It was created in 1983 to preserve the tropical ecosystem here, which is under threat all over the globe. Only two islands — Jolly Buoy and Red Skin — are open to visitors, alternatively for six months each.