North Atlantic Ocean	Narrower	Northwest Atlantic Ocean (40W)
Arctic Ocean	Narrower	Kara Sea
South China And Eastern Archipelagic Seas	Narrower	Singapore Strait
Southwest Atlantic Ocean (20W)	Narrower	Rio de la Plata
Arafura Sea	Narrower	Gulf of Carpentaria
Indian Ocean	Narrower	Gulf of Suez
Indian Ocean	Narrower	Red Sea
Indian Ocean	Narrower	Andaman Sea
Arctic Ocean	Narrower	Northwestern Passages
Arctic Ocean	Narrower	White Sea
English Channel	Narrower	Dover Strait
Northwest Atlantic Ocean (40W)	Narrower	Carribbean Sea
North America	Narrower	Lake Michigan
Mediterranean Sea, Eastern Basin	Narrower	Adriatic Sea
Davis Sea	Narrower	Tryoshnikova Gulf
Timor Sea	Narrower	Jospeph Boneparte Gulf
Southwest Pacific Ocean (140W)	Narrower	Tasman Sea
South China And Eastern Archipelagic Seas	Narrower	Ceram Sea
Arctic Ocean	Narrower	Hudson Bay
World	Narrower	South Pacific Ocean
Indian Ocean	Narrower	Palk Strait and Palk Bay
Yellow Sea	Narrower	Bo Hai
Southern Ocean	Narrower	Weddell Sea
Baltic Sea	Narrower	Sound Sea
Baltic Sea	Narrower	Gulf of Riga
World	Narrower	South America
Indian Ocean	Narrower	Gulf of Mannar
Arctic Ocean	Narrower	East Siberian Sea
Northwest Atlantic Ocean (40W)	Narrower	Gulf of Mexico
South China And Eastern Archipelagic Seas	Narrower	Sawu Sea
Asia	Narrower	Aral Sea
North Pacific Ocean	Narrower	Northwest Pacific Ocean (180W)
Baltic Sea	Narrower	Storebaelt
Indian Ocean	Narrower	Gulf of Oman
Northeast Atlantic Ocean (40W)	Narrower	English Channel
South China And Eastern Archipelagic Seas	Narrower	Gulf of Thailand
Northwest Pacific Ocean (180W)	Narrower	Yellow Sea
Northwest Atlantic Ocean (40W)	Narrower	Bay of Fundy
World	Narrower	Arctic Ocean
Indian Ocean	Narrower	Gulf of Aqaba
Northwest Atlantic Ocean (40W)	Narrower	Labrador Sea
Northeast Pacific Ocean (180W)	Narrower	Gulf of California
Southern Ocean	Narrower	Mawson Sea
Southern Ocean	Narrower	Somov Sea
Northwest Atlantic Ocean (40W)	Narrower	Gulf of St. Lawrence
South China And Eastern Archipelagic Seas	Narrower	Teluk Bone
Indian Ocean	Narrower	Mozambique Channel
South China And Eastern Archipelagic Seas	Narrower	South China Sea
World	Narrower	Indian Ocean
South China And Eastern Archipelagic Seas	Narrower	Selat Sunda
Northeast Pacific Ocean (180W)	Narrower	Gulf of Panama
Mediterranean Region	Narrower	Sea of Azov
Northeast Pacific Ocean (180W)	Narrower	Gulf of Alaska
South China And Eastern Archipelagic Seas	Narrower	Molucca Sea
Arctic Ocean	Narrower	Iceland Sea
Arctic Ocean	Narrower	Lincoln Sea
Arctic Ocean	Narrower	Davis Strait
Northeast Atlantic Ocean (40W)	Narrower	Celtic Sea
Mediterranean Sea, Western Basin	Narrower	Alboran Sea
South China And Eastern Archipelagic Seas	Narrower	Halmahera Sea
Arctic Ocean	Narrower	Norwegian Sea
Northwest Pacific Ocean (180W)	Narrower	Bering Strait
World	Narrower	North Pacific Ocean
Southern Ocean	Narrower	Cosmonauts Sea
Arctic Ocean	Narrower	Greenland Sea
Northwest Pacific Ocean (180W)	Narrower	Tai-Wan Strait
Indian Ocean	Narrower	Arafura Sea
World	Narrower	Southern Ocean
Northeast Pacific Ocean (180W)	Narrower	Bering Strait
Southwest Atlantic Ocean (20W)	Narrower	Drake Passage
Mediterranean Sea, Western Basin	Narrower	Balearic Sea
Arctic Ocean	Narrower	Hudson Strait
South China And Eastern Archipelagic Seas	Narrower	Teluk Tomini
Gulf of Bothnia	Narrower	Bay of Bothnia
World	Narrower	Mediterranean Region
Bering Sea	Narrower	Anadyrskiy Zaliv
Southwest Pacific Ocean (140W)	Narrower	Solomon Sea
World	Narrower	Europe
Northwest Pacific Ocean (180W)	Narrower	Seto Naka
South China And Eastern Archipelagic Seas	Narrower	Celebes Sea
South China And Eastern Archipelagic Seas	Narrower	Sulu Sea
Baltic Sea	Narrower	Gulf of Bothnia
Northwest Pacific Ocean (180W)	Narrower	Sea of Okhotsk
Southwest Pacific Ocean (140W)	Narrower	Bismarck Sea
Arctic Ocean	Narrower	Chukchi Sea
North America	Narrower	Lake Erie
Mediterranean Sea	Narrower	Mediterranean Sea, Eastern Basin
World	Narrower	Asia
South Atlantic Ocean	Narrower	Southwest Atlantic Ocean (20W)
Tasman Sea	Narrower	Bass Strait
Northeast Atlantic Ocean (40W)	Narrower	Bay of Biscay
Mediterranean Sea, Eastern Basin	Narrower	Ionian Sea
Mediterranean Sea, Western Basin	Narrower	Strait of Gibraltar
Northwest Pacific Ocean (180W)	Narrower	Bering Sea
Coral Sea	Narrower	Torres Strait
World	Narrower	Antarctica
Southern Ocean	Narrower	Ross Sea
Coral Sea	Narrower	Gulf of Papua
Southern Ocean	Narrower	Dumont D'Urville Sea
South China And Eastern Archipelagic Seas	Narrower	Jawa Sea
Yellow Sea	Narrower	Liaodong Wan
Arctic Ocean	Narrower	Barents Sea
Mediterranean Sea, Eastern Basin	Narrower	Strait of Sicily
Southern Ocean	Narrower	Drake Passage
North America	Narrower	Lake Superior
North America	Narrower	Lake Ontario
Gulf of Bothnia	Narrower	Bothnian Sea
North Pacific Ocean	Narrower	Northeast Pacific Ocean (180W)
Southern Ocean	Narrower	Bellinghausen Sea
World	Narrower	Baltic Sea
Northeast Pacific Ocean (180W)	Narrower	Coastal Waters of Southeast Alaska and British Columbia
South China And Eastern Archipelagic Seas	Narrower	Selat Makasar
Arctic Ocean	Narrower	Beaufort Sea
South China And Eastern Archipelagic Seas	Narrower	Gulf of Tonkin
World	Narrower	South China And Eastern Archipelagic Seas
South China And Eastern Archipelagic Seas	Narrower	Banda Sea
Southern Ocean	Narrower	Bransfield Strait
Southern Ocean	Narrower	Davis Sea
Indian Ocean	Narrower	Gulf of Aden
World	Narrower	Africa
South Pacific Ocean	Narrower	Southeast Pacific Ocean (140W)
North America	Narrower	Lake Huron
Mediterranean Region	Narrower	Mediterranean Sea
Mediterranean Region	Narrower	Black Sea
World	Narrower	North Atlantic Ocean
Sea of Japan	Narrower	Tatarskiy Proliv
Baltic Sea	Narrower	Central Baltic Sea
World	Narrower	South Atlantic Ocean
Baltic Sea	Narrower	Gulf of Finland
Indian Ocean	Narrower	Strait of Hormuz
Mediterranean Sea, Western Basin	Narrower	Tyrrhenian Sea
Indian Ocean	Narrower	Bay of Bengal
South China And Eastern Archipelagic Seas	Narrower	Flores Sea
Indian Ocean	Narrower	Persian Gulf
Southern Ocean	Narrower	Amundsen Sea
Northeast Atlantic Ocean (40W)	Narrower	Irish Sea
World	Narrower	Australia
Mediterranean Sea, Eastern Basin	Narrower	Aegean Sea
Northwest Atlantic Ocean (40W)	Narrower	Straits of Florida
South China And Eastern Archipelagic Seas	Narrower	Malacca Strait
World	Narrower	North America
South China And Eastern Archipelagic Seas	Narrower	Aru Sea
North Atlantic Ocean	Narrower	Northeast Atlantic Ocean (40W)
Northwest Pacific Ocean (180W)	Narrower	Sea of Japan
Northeast Atlantic Ocean (40W)	Narrower	Skagerrak
South Pacific Ocean	Narrower	Southwest Pacific Ocean (140W)
South China And Eastern Archipelagic Seas	Narrower	Natuna Sea
Southern Ocean	Narrower	Scotia Sea
Indian Ocean	Narrower	Timor Sea
Coral Sea	Narrower	Great Barrier Reef (Coastal Waters)
Arctic Ocean	Narrower	Laptev Sea
Mediterranean Region	Narrower	Sea of Marmara
Southern Ocean	Narrower	Lazarev Sea
Northeast Atlantic Ocean (40W)	Narrower	Gulf of Guinea
Mediterranean Sea, Western Basin	Narrower	Ligurian Sea
Indian Ocean	Narrower	Arabian Sea
Southwest Atlantic Ocean (20W)	Narrower	Scotia Sea
Arctic Ocean	Narrower	Baffin Bay
Indian Ocean	Narrower	Great Australian Bight
Indian Ocean	Narrower	Lakshadweep Sea
Baltic Sea	Narrower	Kattegat
South Atlantic Ocean	Narrower	Southeast Atlantic Ocean (20W)
Northeast Atlantic Ocean (40W)	Narrower	Bristol Channel
Northwest Pacific Ocean (180W)	Narrower	East China Sea
Mediterranean Sea	Narrower	Mediterranean Sea, Western Basin
Southern Ocean	Narrower	Riiser-Larsen Sea
Southern Ocean	Narrower	Cooperation Sea
Ross Sea	Narrower	McMurdo Sound
Baltic Sea	Narrower	The Sound
Asia	Narrower	Caspian Sea
Northwest Pacific Ocean (180W)	Narrower	Philippine Sea
Southwest Pacific Ocean (140W)	Narrower	Coral Sea
South China And Eastern Archipelagic Seas	Narrower	Bali Sea
Northeast Atlantic Ocean (40W)	Narrower	Inner Seas off the West Coast of Scotland
Baltic Sea	Narrower	Lillebaelt
Northeast Atlantic Ocean (40W)	Narrower	North Sea
South China And Eastern Archipelagic Seas	Narrower	Teluk Berau