The Prydz Bay region is located in the Indian sector of the Southern Ocean. Its topog-raphy is characterized by a large continental shelf area and a basin deeper than 600 m, the Amery Basin , the deepest point of which reaches 900 m.

    The hydrographic feature in the Prydz Bay region is characterized by relatively warm (θ > 0.5°C) and salty (S > 34.65 psu) deep water, Circumpolar Deep Water (CDW) , which is distributed outside of the bay, and Modified CDW (MCDW) and cold shelf water in the shelf region .