The Indian Ocean is the only ocean that surrounds India. The Arabian Sea borders the west coast of India, and the Bay of Bengal borders the east coast.
The Indian Ocean is the third largest of Earth's oceans, consisting of about 20 percent of the planet's surface water. Its volume is estimated to be about 28.35 million square miles. A monsoon climate affects the northern parts of the Indian Ocean, which causes cyclones and heavy storms to develop over the Bay of Bengal and the Arabian Sea, hitting shore at India's coasts. The Indian Ocean is also the planet's warmest ocean.