Durga is the principal form of the Mother Goddess in Hinduism. There are many incarnations of Goddess Durga: Kali, Bhagvati, Bhavani, Ambika, Lalita, Gauri, Kandalini, Java, Rajeswari, and has nine appellations: Skandamata, Kushmanda, Shailaputri, Kaalratri, Brahmacharini, Maha Gauri, Katyayani, Chandraghanta and Siddhidatri.A list of 108 names that is used to describe her is very popularly in use by Hindus and is called Ashtottara Shatanamavali of Goddess Durga. She is known by a variety of names: including Amba, Ambika, Jagadamba, Parvathi, Shakti, Adishakti, Adi Parashakti and Devi.According to Shaktism, Adi Para Shakti—the Goddess, Devi—is the Supreme Being and the believers regard Durga as the root cause of creation, sustenance and annihilation. She is pure energy . Being innately formless (known as Adi Parashakti), she manifests herself within the gods and demi-gods so that she may fulfil the tasks of the universe via them. At times of distress, such as when Mahishasura terrorised the universe, she manifests herself in divine form to protect the world. Hence, Durga is also known as Mahishasura Mardini The Annihilator of Mahishasur.