It is estimated that approximately 40% of the world's oil comes from the Indian Ocean
The Indian Ocean is subjected to a variety of pollution sources including oil and ship pollution, specifically in the Red Sea, Persian Gulf, and the Arabian Sea.
The Indian Ocean has the lowest and highest recorded surface salinity level.
Every year it is estimated that the Indian Ocean becomes approximately 20cm wider.
The Indian Ocean is called so because it surrounds the Indian sub continent. In the ancient times, Sea vessels coming to India for trade sailed through those waters to visit India and that is why they named it the Indian Ocean.