(3) Western Ghats Explanation: Western Ghats Is regarded as one of the world's ten "Hottest biodiversity hotspots". It has over 7,402 species of flowering plants, 1,814 species of non-flowering plants, 139 mammal species, 508 bird species, 179 amphibian species, 6,000 insects species and 290 freshwater fish species. Al least 325 globally threatened species occur in the Western Ghats.