What types of economic activities are developed in the Indian Ocean? What are the largest ports on the shores of this ocean?

Off the coast of Australia and Sri Lanka, pearl trades, on the shelf off Australia – tin, gold, phosphorites. In the Persian Gulf basin, India and Australia have oil, gas, iron, manganese. Major ports in the Indian Ocean – Aden, Calcutta, Mumbai, Madras, Karachi, Fremantle, Rangoon, Durban, Mombasa, Mogadishu, Chittagong

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