Related by context. Frequent words. (Click for all words.) 72 Northwest Passage 58 Arctic Ocean 54 Arctic 51 Arctic seabed 49 polar ice 48 circumpolar 47 shipping lanes 47 Welland Canal 46 Greenland 46 explorers 46 seaway 46 Bering Strait 46 Baffin Island 45 Inside Passage 45 St. Lawrence Seaway 45 melting ice 44 Dardanelles 44 Lomonosov Ridge 44 oceans 44 Antarctica 44 Panama Canal 44 seabed 44 Antarctic Peninsula 44 strait 43 glaciers 43 Resolute Bay 42 polar explorer 42 Arctic Sea 42 glacier 42 ice floes 42 polar 42 Beaufort Sea 41 Antarctic waters 41 Erebus 41 Tuktoyaktuk 41 waterway 41 Ellesmere Island 41 cod fishery 41 Sable Island 41 voyages 41 continental shelf 41 Greenland ice 41 Fort Ticonderoga 41 icebreakers 41 Meriwether Lewis 41 deepwater port 41 North Pole 40 seas 40 Antarctic 40 Inuit 40 Atlantic Ocean 40 Antarctic ice 40 melting Arctic 40 Bering Sea 39 Lake Baikal 39 whale sanctuary 39 Royal Geographical Society 39 overland route 39 schooner 39 coastal waters 39 polar regions 39 navigable 39 Pacific Ocean 39 Caspian Sea 39 waters 39 Northwest Territories 39 melting polar 38 Spitsbergen 38 Himalayan glaciers 38 warship 38 boreal 38 icebergs 38 Titanic sank 38 Suez canal 38 Suez Canal 38 treacherous waters 38 Hadow 38 steamship 38 sea 38 UNCLOS 38 whalers 38 Rideau Canal 38 Penobscot River 38 arctic 38 supertankers 38 ocean 38 territorial waters 38 aboriginal peoples 38 Lake Champlain 38 Peary 38 Caspian Basin 38 Indian Ocean 38 stormy seas 37 Little Ice Age 37 Arctic Circle 37 inland waterway 37 oceanographers 37 explorer 37 boreal forest 37 icy waters 37 dogsled