Related by context. Frequent words. (Click for all words.) 65 Lomonosov Ridge 61 seabed 60 Arctic Ocean 55 continental shelf 55 Arctic 52 Barents Sea 48 Beaufort Sea 47 circumpolar 47 Kuril Islands 47 Spratlys 47 permafrost 46 Shtokman gas 46 Trutnev 46 Caspian Sea 46 Greenland 45 Ellesmere Island 45 Tupi field 45 Kovykta 45 North Pole 45 polar 45 subsurface 44 eastern Siberia 44 Northwest Passage 44 disputed islands 43 polar ice 43 Arctic Circle 43 Polyus 43 Sakhalin Island 43 Antarctica 43 Sakhalin II 43 landmass 43 trillion cubic meters 42 Chukchi Sea 42 Kurils 42 Timor Sea 42 Rosneft 42 IPY 42 undersea 42 sq. miles 42 gas hydrates 42 Greenlanders 42 moon Titan 42 Lake Baikal 42 boreal forest 41 West Qurna 41 melting Arctic 41 Continental Shelf 41 OAO Rosneft 41 Russia 41 Barents 41 Antarctic 41 Antarctic Ice 41 Cepu 41 Dygalo 41 subsalt 41 Chukchi 41 seafloor 41 sq km 41 British Antarctic Survey 41 UNCLOS 41 Sakhalin 40 Alaska Prudhoe Bay 40 Spratly 40 Antarctic ice 40 Nord Stream pipeline 40 Senkaku Islands 40 Antarctic Treaty 40 Yamal 40 polar regions 40 Takeshima 40 km2 40 sq. km 40 Kashagan 40 Deh Cho 40 arctic 39 Antarctic Peninsula 39 Spitsbergen 39 missile shield 39 Greenland ice 39 lunar surface 39 Martian surface 39 breakaway regions 39 hydrocarbon reserves 39 Dokdo 39 Abkhazia 39 subsoil 39 Glonass 39 Karachaganak 39 whale sanctuary 39 Yellow Sea 39 Baffin Island 39 km ² 39 territorial waters 39 Kurdish autonomous 38 oceans 38 Arctic Sea 38 anti missile shield 38 underwater plumes 38 Nunavut 38 Western Sahara 38 missile defense