oceans covers a lot of earth's surface, approximately 71% of the surface is water, 97% of the worlds water is salty, and a lot Of the fresh water is Frozen. But it contains POSSIBLY biLlions Of lifeforms and many still remain undiscovered in the deepest parts of the ocean, but the ones that we do know of creAte a large source Of food that People enjoy and some even live On it, so it is obviously impOrtant to our survival and is a large industry that people work in. oceans in the picture above is everywhere that is blue and surrounds continents and islands.