Which ocean is entirely in the northern hemisphere?

The Arctic Ocean is the smallest and shallowest ocean on our planet, completely located in the northern hemisphere of the Earth and almost completely surrounded by the continents of Eurasia and North America. The ocean area is only 14.75 million km², and the average depth is 1225 m.
The territories of six states adjoin the Arctic Ocean. These are Denmark, Russia, Iceland, Norway, Canada and the United States of America. During the year, the ocean is used for sea freight between Russia, Canada and the United States, although in winter it is completely covered with ice.