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
Antz Nansen he made his mixed martial arts debut against Olympic judoka Hiroshi Izumi at "" in Saitama, Japan. Nansen was able to control the fight with his striking and won via technical knockout in the first round. The following year, on 25 April, Nansen took part in his second MMA bout at "ASTRA: Yoshida's Farewell" against jiu-jitsu fighter Enson Inoue, who was making his return to the ring after six years of retirement. Inoue used his superior grappling skills to win via submission by using an armbar in round 1. He was then set to face Satoshi Ishii, another of Japan's