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Otter Habitat in Thamirabarani
June 18 , 2026
15 hrs 0 min
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- Researchers have raised concerns over the declining otter population in the Thamirabarani River due to the destruction of their natural habitat.
- Thamirabarani, also called Tamraparni or Porunai, is a rare perennial river that flows entirely within Tamil Nadu.
- It originates from Agastyarkoodam Peak in the Pothigai Hills of the Western Ghats and drains into the Gulf of Mannar in the Bay of Bengal.
- The river is about 128 kilometres (km) long and flows through Tirunelveli and Thoothukudi (Tuticorin) districts.
- Major tributaries are the Gadananathi, Manimuthar, and Pachaiyar rivers, and important dams include Papanasam, Karaiyar, Manimuthar, Servalar, and Gadananathi Dams.
- The river is rich in biodiversity, with about 669 fish species, and it is one of the few rivers in India that supports all three otter species—the Eurasian Otter, Smooth-coated Otter, and Asian Small-clawed Otter.
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