Tenasserim Coast

Tenasserim Coast
Name	Tenasserim Coast
Native name	တန့်ဆိပ်ခရိုင်
Location	Andaman Sea
Country	Myanmar
Subdivision type	Region
Subdivision name	Tanintharyi Region
Largest city	Myeik
Timezone	Myanmar Standard Time

Tenasserim Coast

The Tenasserim Coast is a narrow, largely tropical littoral strip along the eastern margin of the Andaman Sea in southern Myanmar, extending from the Mawlamyine District southward to the Malay Peninsula frontier. The coast forms a transitional zone between continental Southeast Asia and the island chains of the Andaman Sea, with historical links to Ayutthaya Kingdom, British Burma, Siam, and modern Myanmar. The region's mix of archipelagos, mountains, river mouths and mangrove systems has shaped its strategic importance for navigation, trade, and conservation.

Geography

The coastal plain lies between the Tenasserim Hills—part of the Indo-Burma Ranges—and the waters of the Andaman Sea, including major island groups such as the Mergui Archipelago and headlands like Cape Negrais. Rivers including the Salween River, Thanlwin River tributaries, the Dawei River and the Myeik River drain into wide estuaries and deltas, while bays such as Myeik Bay and Victoria Point fjord-like inlets rise from tectonic and erosional processes. The chain of islands creates complex bathymetry that influences monsoonal currents, with the Bay of Bengal monsoon system and the Southwest Monsoon shaping seasonal weather and sediment transport.

History

Coastal Tenasserim has long been a contact zone linking Srivijaya, Burmese Kingdoms, and Ayutthaya Kingdom maritime networks; archaeological finds connect to Dvaravati and Mon people settlements. From the 16th to 18th centuries, ports on the coast figured in trade with Portuguese Empire and Dutch East India Company vessels; cartographic records by James Horsburgh and reports to the East India Company documented navigation hazards around the archipelago. During the 19th century Anglo-Burmese Wars, the strip was contested in treaties such as the Anglo-Siamese Treaty of 1909 which adjusted borders on the peninsula; British colonial administration integrated the area with British Burma operations centered on Rangoon and Moulmein. In World War II the coast and islands became strategic in campaigns involving Imperial Japanese Army amphibious operations and supply lines linked to Burma Campaign logistics. Post-independence, the coast has been affected by insurgencies associated with groups like the Karen National Union and Moken sea nomads’ displacement tied to national consolidation and resource development initiatives.

Ecology and Biodiversity

The Tenasserim Coast encompasses mangrove forests, lowland evergreen rainforest foothills, and coral reef ecosystems centered on the Mergui Archipelago, which hosts diverse taxa including Irrawaddy dolphin sightings in estuaries and reef-associated species like green sea turtle and hawksbill sea turtle. Terrestrial fauna include populations of Asian elephant, leopard, and endemic amphibians recorded in surveys by conservation groups and institutions such as Fauna and Flora International collaborating with Wildlife Conservation Society. Birdlife includes migratory shorebirds using wetlands like Tanintharyi River estuaries on routes connecting to East Asian–Australasian Flyway. Coral reefs exhibit both fringing and patch reef growth, with reef fisheries exploited by local fishers and facing pressures from blast fishing documented in reports to Convention on International Trade in Endangered Species of Wild Fauna and Flora stakeholders. Several areas are part of protected efforts coordinated with organizations like IUCN and national designations modeled after Tanintharyi National Park objectives.

Economy and Resources

The coastal economy historically depended on maritime trade, rice exports via ports linked to Irrawaddy Delta markets, and resource extraction including timber and tin exploited by companies associated with Burma Oil Company and later state enterprises. Presently, fisheries—artisanal and commercial—constitute a primary livelihood across Myeik District and Dawei District, alongside aquaculture ventures involving shrimp farms supplying markets in Thailand and China. Offshore hydrocarbon exploration interests have attracted companies similar to Chevron and regional energy firms, while proposed infrastructure projects including a deepwater port and special economic zone near Dawei aim to link to Bangkok and Kanchanaburi corridors. Plantation crops such as rubber and oil palm extend inland from the coast, with concessions issued to firms including multinational investors covered in environmental impact analyses by institutions like World Bank advisors. Illegal logging and unregulated mining have prompted interventions by civil society groups including Greenpeace and local NGOs.

Demographics and Culture

The population is ethnically diverse, with communities of Bamar, Mon people, Karen people, Shan people traders, and maritime groups like the Moken (Sea Gypsies) maintaining distinct languages and boat-building traditions. Coastal towns such as Myeik, Dawei, and Mawlamyine (Moulmein) feature Buddhist monasteries, colonial-era architecture influenced by British Empire administrative styles, and festivals tied to the Loy Krathong and Thingyan cycles. Linguistic landscapes include varieties of Burmese language, Mon language, and Austronesian dialects used by seafaring populations; artisanal crafts involve lacquerware and traditional fishing-net weaving traded at markets connected to Yangon and regional hubs.

Transportation and Infrastructure

Maritime channels remain primary arteries: ferry routes connect island communities within the Mergui Archipelago, while major ports at Myeik and Dawei handle cargo, passenger and fishing fleets. Road links such as the coastal highway connect to national routes toward Yangon and cross-border roads to Thailand aimed at integrating with ASEAN economic corridors like proposals to link to Phuket and Ranong. Aviation includes regional airports serving Myeik Airport and Dawei Airport with limited commercial services. Infrastructure projects—rail proposals and deep-sea port construction—are evaluated in joint ventures with foreign partners and multilateral financiers including actors associated with Asian Development Bank and bilateral arrangements with China. Electricity transmission and telecommunications expansions aim to connect remote island and mangrove communities but face challenges from terrain and conservation regulations administered under national agencies such as the Ministry of Natural Resources and Environmental Conservation.

Category:Geography of Myanmar Category:Coasts of Asia