Oceans are big and people have always felt that the old adage "Out of sight - out of mind" works. For centuries folks have dumped trash into the sea - the pictures of the New York trash barges are famous. Ships have dumped oil ballast. Was have sunk countless tankers during wartime and boaters toss plastic bottles overboard. Whalers used to process whales for their blubber at sea an release the stripped carcass after harvesting the desirable parts.
All of the Oceans of the Earth are getting polluted. 80% of the pollutants comes from the land. The remaining 20% of ocean pollution comes from the air.
Yes, because when other lakes or ponds get polluted and the clouds condenses it, it will rain polluted rain into the ocean.
The ocean can become polluted with oil spills, industrial dumping, littering, and raw sewage.
arctic
Yes it is being polluted.
The Indian Ocean is polluted
Waste is poured into the ocean water, and it turns into rain, making it polluted rainwater.
Where the sea is polluted by sewage, trash, oil spills and waste.
bad people throw stuff in it
The humans started littering and it polluted the water.
The spill is in the Gulf of Mexico, which is a body of water off the Atlantic ocean.
Technically all oceans are in some way or another polluted; the ocean is one gigantic mass of salt water, and the currents will move harmful chemicals around in it, just as they will with nutrients. Also since almost every landmass in the world is occupied by humans, and the majority of our species pollut in some manner of another. It is very difficult to not have the majority of oceans be polluted in some way.