GENERAL KNOWLEDGE

Detailed explanation-1: -Historically, there are four named oceans: the Atlantic, Pacific, Indian, and Arctic. However, most countries-including the United States-now recognize the Southern (Antarctic) as the fifth ocean. The Pacific, Atlantic, and Indian are the most commonly known.

Detailed explanation-2: -Soon after, the National Oceanic and Atmospheric Administration (NOAA) recognized the body of water as the fifth ocean in 1999 after the Board of Geographic Names approved the title, “Southern Ocean, ‘’ reports Paulina Firozi for the Washington Post.

Detailed explanation-3: -National Geographic decided to designate the Antarctic waters as its own ocean (instead of merely southern parts the Atlantic, Indian and Pacific) to bring awareness to, and promote conservation of the waters.