The document discusses the world's five major oceans. The Pacific Ocean is the largest and deepest ocean, containing over 1/3 of the Earth's surface and the largest volume of water. It has over 20,000 islands, most notably in a broad triangular shape. The Atlantic Ocean surrounds Europe, Africa, and the Americas, and is wider in the south and narrower in the north. It also contains the mid-Atlantic ridge. The Indian Ocean is bounded by Asia, Africa, and Australia, containing few islands like the Lakshadweep and Maldives. It is divided into the Arabian Sea and Bay of Bengal by India and Sri Lanka.