habitats and the food chain - sea

The "sea" or the "ocean" are words used to describe all the interconnected salt waters of the world including the five great oceans (see our oceans page for more).

In geographic terms (and for this page), "sea" is used in the name of specific, smaller bodies of seawater. Seas of the world usually make up partly landlocked areas within the much larger five great oceans.

Seas only partially landlocked and/or bounded by submarine ridges on the sea floor are often referred too as marginal seas. Opinions often differ over which seas are considered marginal seas, some are found within mediterranean seas.

Marginal seas of the Arctic Ocean include: Barents Sea, Beaufort Sea, Chukchi Sea, Kara Sea and Laptev Sea.

Some marginal seas of the Southern Ocean include: Amundsen Sea, Ross Sea, and Weddell Sea.

Some marginal seas of the Atlantic Ocean include: the Argentine Sea, English Channel, Gulf of Mexico, Hudson Bay, Irish Sea, North Sea, and Norwegian Sea.