The Pacific Ocean is the greatest of oceans. It exceeds the area of all the lands of the earth. It covers more than 1/3 of the earth’s surface – as much as the Atlantic, Indian, and Artic Oceans combined. It is the largest geographical feature in the world.
The Pacific Ocean is 164,384,000 square kilometers with an average depth of 4,000 meters. The greatest depth of the Pacific Ocean is 10,924 meters in the Marianas Trench, the deepest point on earth. The South Pacific is divided between Melanesia, large mountainous land masses; Polynesia, volcanic and coral islands; and, north of the equator, Micronesia, more volcanic and coral islands. Together, there are over 30,000 islands in these chains, more than found in all other islands combined.
Cite: Stanley, D., South Pacific Handbook.