Arctic Ocean gas reserves, and the Chukchi shelf forms the border between Russian and the United States as stated in the USSR–USA Maritime Boundary Agreement. The whole area is subject to international territorial claims. An underwater ridge, the Lomonosov Ridge, divides the deep sea North Polar Basin into two oceanic basins: the Eurasian Basin, which is between deep, and the Amerasian Basin (sometimes called the North American, or Hyperborean Basin), which is about deep. The bathymetry of the ocean bottom is marked by fault block ridges, abyssal plains, ocean deeps, and basins. The average depth of the Arctic Ocean is . The
Columbia, the Gem of the Ocean set in 1912 – a full-cast rendition of "Columbia, the Gem of the Ocean" is performed during the scene depicting the town's Independence Day celebration and, from the post-World War II era through to the 1960s, the first few chords of "Columbia, the Gem of the Ocean" were used as an interval signal during Voice of America broadcasts, until ultimately replaced by "Yankee Doodle". In the 1957 Charles Mingus album The Clown, the title track contains a narrative story spoken by Jean Shepherd in which a clown - who suffers a fall from grace - initially has a "a seal