Important ecological regions of South India are the Nilgiri Biosphere Reserve, located at the conjunction of the borders of Karnataka, Kerala and Tamil Nadu in the Nilgiri Hills and the Anamalai Hills in the Western Ghats. Bird sanctuaries including Vedanthangal, Ranganathittu, Kumarakom, Neelapattu and Pulicat are home to numerous migratory and local birds. Lakshadweep has been declared a bird sanctuary by the Wildlife Institute of India. Other protected ecological sites include the mangrove forests of Pichavaram in Tamil Nadu, the backwaters of Pulicat lake in Tamil Nadu and Vembanad, Ashtamudi, Paravur and Kayamkulam lakes in Kerala. The Gulf of Mannar Biosphere Reserve covers an area of 10,500 km2 of ocean, islands and the adjoining coastline including coral reefs, salt marshes and mangroves. It is home to endangered aquatic species including dolphins, dugongs, whales and sea cucumbers.