The largest and deepest of Earth’s oceanic divisions. It extends from the Arctic Ocean in the north to the Southern Ocean (or, depending on definition, to Antarctica) in the south and is bounded by Asia and Australia in the west and the Americas in the east.
The third-largest ocean (after the Atlantic Ocean and Pacific Ocean), extending from southern Asia to Antarctica and from eastern Africa to southeastern Australia.
The cold, ice-covered waters surrounding the North Pole, located entirely within the Arctic Circle. It contains the northernmost islands of Canada, Norway, and Russia.
Also known as the Southern Ocean, this comprises the southernmost waters of the World Ocean, generally taken to be south of 60°S latitude and encircling Antarctica.
Also known as the Antarctic Ocean, this comprises the southernmost waters of the World Ocean, generally taken to be south of 60°S latitude and encircling Antarctica.
A sea connected to the Atlantic Ocean, surrounded by the Mediterranean Basin and almost completely enclosed by land: on the north by Southern Europe and Anatolia, on the south by North Africa and on the east by the Levant.
The variable that is changed or controlled in a scientific experiment to test the effects on the dependent variable.
A visible line along the side of a fish consisting of a series of sense organs which detect pressure and vibration.