How many continents does the Indian Ocean limit?

The Indian Ocean is the third largest ocean in the world. It washes four continents with its waters. In the west, its waters wash Africa; in the north, it is bordered by the huge continent of Eurasia. The northernmost point of the ocean in the north is in the Persian Gulf. To the west, the waters of the ocean are bordered by the lands of Australia. The natural border of the Indian Ocean in the south is a continent like Antarctica.