An ideal kachai called the Ocean North of the island, including the rapids and the surrounding coast, all of which are defined as including geographic North Pole.
Arctic Ocean called the northern end of the world, including islands and the surrounding coastline, which is defined as the total geographic North Pole.
The Arctic Ocean is used to refer to the northern end of the world, including the islands and coasts around, all of which were determined to include geographical North Pole.