Geography: International Boundary Lines and List of the Major Straits of the World

Name of Boundary

Lies Between

Radcliff Line

India and Pakistan

Durand Line

Pakistan and Afghanistan

MacMohan Line

India and China

49th Parallel

USA and Canada

38th Parallel

North Korea and South Korea

17th Parallel

North Vietnam and South Vietnam

Hindenburg Line

Germany and Poland

Siegfried Line /Westwall

Germany and France (from German side)

Maginot Line

Germany and France (from French side)

Mannerheim Line

Russia and Finland

Oder-Neisse Line

Poland and Germany

20th Parallel

Libya and Sudan

22nd Parallel

Egypt and Sudan

25th Parallel

Mauritania and Mali

31st Parallel

Iraq and Iran

Strait

Contiguous Landmass

Joining Seas/Water Bodies

Hormuz Strait

Iran and Oman

The Gulf of Oman and the Persian Gulf

Bab-el-Mandeb

Djibouti, Yemen, and Eritrea of the Somali Peninsula

The Gulf of Aden and the Red Sea

Ten Degree Channel

Car Nicobar Islands and Little Andaman

The Andaman Sea and the Bay of Bengal

Sunda Strait

Java island of Indonesia with its Sumatra island.

The Java Sea and the Indian Ocean

Florida Strait

Cuba and the USA

Gulf of Mexico and the Atlantic Ocean

Bering Strait

Asia from America

The Arctic Ocean and East Pacific Ocean

Strait of Gibraltar

Spain and Morocco

The Atlantic Ocean and the Mediterranean Sea

Korea Strait

Japan and South Korea

The East China Sea and the Sea of Japan

Strait of Malacca

Malaysia and Sumatra

The Pacific Ocean to the east with the Indian Ocean to the west

Bonifacio Strait

Corsica island of France and Sardinia islands of Italy

The Tyrrhenian Sea and the Mediterranean Sea

Palk Strait

India and Sri Lanka

The Bay of Bengal in the northeast with the Palk Bay/Arabian Sea in the southwest

Bosphorus Strait

Divides Europe from Asia

The Black Sea to Sea of Marmara

Bass Strait

Tasmania island and mainland Australia

The Great Australian Bight and the Tasman Sea

Davis Strait

Between Greenland and Canada

The Baffin Bay and the Labrador Sea

Jamaica Channel

Jamaica and Hispaniola

The Caribbean Sea and North Atlantic

Hudson Strait

Baffin Island and Labrador Peninsula

Hudson Bay and the Labrador Sea