All else being equal cold water is more dense than warmer water. The Arctic Ocean, being colder, would be more dense.
Atlantic ocean
arctic
Arahic Ocean
Canada has the longest coastline in the world. The Atlantic Ocean is to the east, the Pacific Ocean is to the west, and the Arctic Ocean is to the north.
No ocean covers the North Pole. The North Pole is an imaginary point on the Arctic Ice cap that covers the Arctic Ocean. SHORT ANSWER- Arctic Ocean
The Artic ocean.
The Atlantic Ocean and the Arctic ocean.
North America shares its borders with the Pacific Ocean, Gulf of Mexico, Caribbean Sea, Atlantic Ocean, and Arctic Ocean.
The Arctic Ocean lies entirely within the northern hemisphere. It is the smallest and the shallowest of the world's five major oceans.
The Arctic Ocean lies to the north of Europe and Asia.
There are actually two oceans that do not span the Equator. These are the Arctic Ocean and the Southern Ocean.
Lake Baikal in Russia is the largest and deepest lake. I hope it hasn't been messed up.