The beautiful tropical island arc of Nicobar is part of the union territory of Andaman and
Nicobar Islands, India. These islands are situated in the south–east of the Bay of Bengal,
around1200 km east of main land India between 6° – 10° N latitude and 92° – 94° E longitude,
and separated from the Andaman group by 10° channel. A variety of landforms can
be seen along the coast and isolated islands laden with lush green tropical vegetation and
beaches dotted with coconut trees. The islands of Nicobar are inhabited by two aboriginal
tribes of Indo–Mongoloid origin. One of them is Nicobarese who live in twelve inhabited
islands with a major concentration in Car Nicobar. The other tribe is Shompen, whose
members live in the interior areas of Great Nicobar. The lush evergreen forest, undulating
terrain, tall coconut trees behind the scintillating sandy beaches, and coral belt surrounding
the island with green water gradually merging with deep blue water characterize these
islands from distance.
The Nicobar archipelago was not discovered all of sudden rather it was also known to the
ancient mariners sailing to Southeast Asia from India, Middle East and Europe. A careful
insight into the maritime history of the Indian Ocean would reveal several references to
these islands by different mariners in different names. It may be a passerby citation or
sometimes detailed description of its location and resources as could be seen from the
Chola dynasty inscriptions of South India and Chinese travelers′ remarks. Between the
11th and 12th centuries A.D. some of these islands came under the dominating influence of
maritime power of Southern India and as history would repeat itself it again became a part
of the mainland India about nine hundred years later (Syamchaudhuri, 1977).
Geologically the Nicobar Islands are part of a great island arc created by the collision of
the Indo–Australian Plate with Eurasia. The collision lifted the Himalayas and most of the
Indonesian islands, and created a long arc of highlands and islands, which includes the
Arakan Yoma range of Burma, the Andaman and Nicobar Islands, and the islands off the
west coast of Sumatra, including the Banyak Islands and Mentawai Islands. Nicobar
Islands are formed on a coralline base with marine sediments. Except for Great Nicobar
Island, all other islands in the Nicobar group are relatively smaller in size surrounded by
reef.