Ocean is the term used for the world’s sea water, expect for landlocked seas such as the Caspian. More than 70 percent of the planet’s surface is occupied by oceans – the Pacific Ocean alone is more than 25 percent larger than the planet’s entire land area. Smaller divisions of some oceans are separately named as seas. Pacific Ocean – 166,240,000 sq km Atlantic Ocean – 86,560,000 sq km Indian Ocean – 73,430,000 sq km Arctic Ocean – 13,230,000 sq km South China sea – 2,974,600 sq km Caribbean sea – 2,753,000 sq km Mediterranean Sea – 2,510,000 sq km Bering Sea – 2,261,000 sq km Gulf of Mexico – 1,542,985 sq km Sea of Okhotsk – 1,527,570 sq km East China Sea – 1,249,150 sq km Sea of Japan – 1,012,945 sq km Andaman Sea – 797,700 sq km Hudson Bay – 730,380 sq km