A lot of people use the terms ‘ocean’ and ‘sea’ interchangeably but there is actually a difference between the two termd.
An ocean is a large expanse of salt water that is bounded by the continents, or the equator or other imaginary lines. There are five (5) oceans: the Arctic, Atlantic, Indian, Pacific and Southern.
On the other hand, seas are the parts of the ocean where it meets the land. They are smaller and partially surrounded by land. To fully understand the difference, check out the picture below: (the article continues after the ad)
Even though the North Sea is part of the Atlantic ocean, it is called a sea because it’s where the ocean meets the land at the coasts of the UK, Norway, Denmark, the Netherlands, Belgium and France.