Andaman Nicobar Islands

Barren Island is located in Andaman Sea, far east in the Andaman Island chain is the only Active Volcano in South Asia.

Andaman Nicobar Islands is so prestigious to house India's only Active Volcano atBarren Island, off North Andaman by ferry route.Mud volcanoes are also abundantly existing among the Northern Group of Islands.

The cost can be varied from 1800-5000 Indian bucks from shop to shop. However, the content of scenery will be same(obviously that is something that can't be changed.)
There is one named Barefoot Scuba which is very professional. You can find their videos on YouTube .(This is the costly one)

Snorkeling will not be as excited as Scuba. It is cheaper activity there. You can have it in 400 bucks(for 10 Mins) without photography and in 800 bucks(20 mins)with photography. Snorkeling is helpful for people who are unfit for Scuba.

Port Blair is the gateway to these enchanted islands that is on the eastern edge of the Indian Ocean. The capital city of the Andaman and Nicobar Islands is relatively small in size and today in the 21st century, is a melting pot of people from all parts of India who have come to adopt these Islands as their home. Port Blair is the seat of Civil Administration and also hosts a Tri-Service Command of the Armed Forces. Apart from tourism, fishing and paddy (rice) cultivation form the chief occupation for the locals. Port Blair is a land of tranquility where settlers from all parts of India live in complete harmony. The serenity of these islands was unfortunately disrupted in 2004 by the tsunami that caused a great deal of damage in the Nicobar Islands. However the populated areas of Port Blair and Havelock were unscathed and all geological indications report that the islands are safe.