Mudumalai Wildlife Sanctuary & National Park is situated at the tri-junction of Tamil Nadu, Kerala and Karnataka on the North Eastern Slopes of the Nilgiris part of Western Ghats descending to the Mysore Plateau. An erstwhile game reserve, Mudumalai was declared a wildlife sanctuary with a 62 sq KM area in the early 1940 by the then Madras Presidency. With Bandipur Tiger Reserve (Karnataka) in the north, and Wynad Wildlife Sanctuary (Kerala) in the west the region forms a single, continuous viable habitat for a varied range of wildlife and is a part of the Nilgiri Biosphere Reserve. While Mudumalai’s western half receives the southwest monsoon, the eastern tracts receive the relatively gentler north-east monsoon which results in a diversity of vegetation types and typical migration of herbivores.

The Mukurthi National Park is located in the Nilgiris District of Tamil Nadu, the south eastern corner of the Nilgiris Plateau. Spread over 78.46 km, this represents one of the very few areas which support a viable population of the Nilgiri Tahr. A fascinating feature of the Mukkurthi National Park is its endemism and relationship with the Himalayan flora and fauna.

The Guindy National Park, 2.70 sq.KM wide is unique in more ways than one. It has the rarest vegetation type – the tropical dry evergreen vegetation. It is one of the smallest national parks and is situated right in the heart of a metropolitan city - Chennai. But perhaps the best of all is that it has a role in both ex-situ and in-situ conservation.

The Gulf of Mannar Marine National Park has the core area of about 560 sq.KM from Rameswaram to Tutucorin lying within the Gulf of Mannar Biosphere Reserve covering an area of 10,500 Sq.KM. on the south-east coast of India. It covers the coast of Reserve comprises 21 islands with estuaries, mudflats, beaches, forests of the near shore environment, including marine components like algal communities, sea grasses, coral reefs, salt marshes and mangroves. Among the Gulf’s 3600 plant and animal species, there are the globally endangered species Sea Cow (Dugong dugong) and six mangrove species endemic to peninsular India.

The Indira Gandhi Wildlife Sanctuary and National Park, the largest and well preserved sanctuary in Tamil Nadu, lies in the Western Ghats south of the Palghat Gap, better known as Anaimalais (Mountain of Elephants). With an area of 958 sq.KM, it is rich in flora and fauna.This protected area constitutes the most important watershed for the agricultural economy and power supply. Major reservoirs like Parambikulam, Aliyar, Thirumurthi, Upper Aliyar, Kadambarai, Sholayar and Amaravathi are fed by the perennial rivers which originate from the Sanctuary.

The tribal communities living in the sanctuary are Kadar, Malasar, Malai Malasar, Muduvar, Pulayar and Eravalar. They participate in the management as Forest watchers and Antipoaching Watchers.