The arctic ocean
The area around the a country is owned by that country. It is their area to fish in so they own the minerals. The minerals in the middle of the ocean with no counties there are owned by whoever gets there first.
Under international law the majority of the ocean waters in the world are owned by no country. Countries usually only own the water up to approximately 10 nautical miles off their coasts.
Ireland is not owned by any country. It is independent. Northern Ireland, which may be what you are referring to, is part of the United Kingdom.
was russia owned by another country
Europe is the country that is north of the equator. No part of the country of Europe touches the Pacific Ocean.
Canada is not owned by the french. Non of it is. It isnt owned by England either. Canada is its own country. Not owned by anyone but itself.
ocean
Financiers mainly. This question is not precise. Which country do you mean? When are you talking about?
The Galapagos Islands are owned by Ecuador!
The Faroe Isles have been part of Denmark since 1380.
Nigeria is not surrounded by an ocean but bordered at the southern most part of the country by the Atlantic Ocean. Otunba.
The Pacific Ocean is not owned by any person or nation. Several nations have territory within the Pacific Ocean, but the majority of it is not "owned".