Go to Wandoor by bus 45 minutes and 18 Rupies, get out at the jetty and take a boat to Jolly Buoy Island for snorkeling, 650 Rupies for the boat and 50 Rupies entrance fee, or go to the last stop for a very beautiful beach (but some sandfleas there).
Popular as a trekking haunt, the lush forests of Madhuban house a variety of birds and colourful butterflies besides lumbering elephants. Madhuban is to the north east of South Andaman, situated about 75 km from Port Blair. One can also reach Madhuban by bus or ferry from Port Blair.
Chidiya Tapu or Bird Island is a tiny village on the southern most tip of South Andaman, about 25 km from Port Blair. Its lush green mangroves and sandy beaches make a picturesque site. The island also provides astounding views of other islands and submerged corals, especially at sunset. Some of the best snorkelling in the area is offered at an island couple of kilometers south of Chidiya Tapu.
Go to Chiriya Tapu by bus, about 1 hour, 18 Rupies, from the last stop you walk about 20 minutes trough a forest and you come to a quite nice beach, no sandfleas but a bit of snorkeling.