GENERAL KNOWLEDGE

Detailed explanation-1: -ocean basin, any of several vast submarine regions that collectively cover nearly three-quarters of Earth’s surface. Together they contain the overwhelming majority of all water on the planet and have an average depth of almost 4 km (about 2.5 miles).

Detailed explanation-2: -The ocean is a huge body of saltwater that covers about 71 percent of Earth’s surface. The planet has one global ocean, though oceanographers and the countries of the world have traditionally divided it into four distinct regions: the Pacific, Atlantic, Indian, and Arctic oceans.

Detailed explanation-3: -About 71 percent of the Earth’s surface is water-covered, and the oceans hold about 96.5 percent of all Earth’s water.

Detailed explanation-4: -Covering more than 30 percent of the Earth’s surface, the Pacific Ocean is the largest water mass on the planet. With a surface area of more than 155 million square kilometers (60 million square miles), this ocean basin is larger than the landmass of all the continents combined.