Indian examples of Ancient submerged Port Towns: In India evidences of ship building, port and warehouses installations are datable to Harappan culture. The important Harappan and late Harappan ports were Lothal, Lakhabawal, Kindarkhera, Kuntasi, Megham, Prabhasa, Todio, Amra. The excavations of these sites have yielded antiquities of Bahrain island, Persian gulf, Egypt and Mesopotmia cities. The same maritime traditions continued even during the life time of Buddha, the Mauryas, the Gupta and in later period. During historical period India had trade and cultural contacts with Egypt, Rome, Greeks, Arabs, China and all most all Southeast Asian countries. through these ports.
The ports on the west coast were Barygaya, Suppara, Calliena, Semylla, Mandagore, Palaepatme, Malizigara, Aurranobbas, Byzantine, Naura, Tyndis, Muziris and Nelcynda and the ports on the east coast were Tamralipti, Charitrapur, Paluru, Dantapur, Kalingapatnam, Pithunda, Sopatma, Ghantasala, Poduca, Puhar, Korkai and Camara. Merchants thronging sea -port towns like Mamallapuram, Puhar, and Korkai; or busy customs officials, and those engaged in loading and unloading vessels in the harbor. The wealth of the Roman Empire reached India through the ports of Kalyan, Chaul, Broach, and Cambay in Western India. Tamralipti was an important port in Bengal. It carried on trade with China, Lanka, Java and Sumatra. In the Andhra region, the ports were Kadura and Ghantasala, Kaveripattanam (Puhar) and Tondail were the ports of the Pandya region. The ports of Kottayam and Muziris were on the Malabar coast. There was a great maritime trade between India and Southeast Asia and China.