One of the seven dweepas, the others being Jambudweepa, Plakshadweepa, Shalmalidweepa, Kraunchadweepa, Shakadweepa, Pushkaradweepa. It was famous for pearls as per Mahabharata Bhishmaparva Chapter 13. Plakshadweepa was twice the size of Jambudweepa, and Shalmali was twice that of Plaksha and so on as per Devibhagavta Ashtamaskanda.

Kushadweepa surrounds the Sura sea, and its ruler was Jyotishman. He had seven sons – Utbhida, Venuman, Vairadha, Lambana, Dhriti, Prabhakara, Kapila, and the kingdoms there were named after them. It was inhabited by humans, daityas, danavas, devas, gandharvas and yakshas. There were four castes there – dami, shushmika, sneha, mandeha matching the brahmin, kshatriya, vaishya, shudra classes. Vidruma, Hemashaila, Dyutiman, Pushpavan, Kusheshaya, Harimandara were the six highest peaks. The seven main rivers were Dhutapapa, Shiva, Pavitra, Sammati, Vidyut, Ambha, Mahi, which were holy rivers. There was a kushasthambha here which blazed like agni and lit the entire Kushadweepa, which derived its name from this sthambha. Kushadweepa is surrounded by an equally large Khrita ocean.