Bouvet Island additional quotas were awarded from 2008 for a total catch of . There is a controversy as to whether the fisheries are sustainable, particularly in relation to krill being important food for whales. In 2009, Norway filed with the UN Commission on the Limits of the Continental Shelf to extend the outer limit of the continental shelf past surrounding the island. The "Hanse Explorer" expedition ship visited Bouvet Island on 20 and 21 February 2012 as part of "Expédition pour le Futur". The expedition's goal was to land and summit the highest point on the island. The first four climbers
Atlantic Ocean has a volume of . The North Atlantic covers (11.5%) and the South Atlantic (11.1%). The average depth is and the maximum depth, the Milwaukee Deep in the Puerto Rico Trench, is . The bathymetry of the Atlantic is dominated by a submarine mountain range called the Mid-Atlantic Ridge (MAR). It runs from 87°N or south of the North Pole to the subantarctic Bouvet Island at 42°S. The MAR divides the Atlantic longitudinally into two halves, in each of which a series of basins are delimited by secondary, transverse ridges. The MAR reaches above along most of its length, but