- I. Nanda Devi Biosphere Reserve is located in Uttarakhand, surrounding the Nanda Devi Peak. - II. Gulf of Mannar Biosphere Reserve is situated in the southern tip of India in Tamil Nadu. - III. Manas Biosphere Reserve is located in Assam, bordering Bhutan, and is known for its wildlife, including the tiger and elephant. It is not in Nagaland. - IV. Panna Biosphere Reserve is located in the Panna and Chhatarpur districts of Madhya Pradesh.