Straits & Canals
Geography · जलडमरूमध्य और नहरें
📋Quick Overview
Straits are narrow waterways between two landmasses that connect two larger water bodies. Canals are man-made waterways constructed for navigation and trade. Questions on straits and canals are regularly asked in competitive exams — especially which strait connects which water bodies, and the countries they pass through.
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Strait of Malacca is the BUSIEST shipping lane in the world — over 25% of world trade passes through it
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Suez Canal (1869) and Panama Canal (1914) are the two most important man-made waterways in global trade
📖Major Straits of the World
| Strait | Connects | Between Countries | Significance |
|---|---|---|---|
| Strait of Malacca | Indian Ocean & Pacific Ocean (South China Sea) | Malaysia, Indonesia, Singapore | Busiest shipping lane, 25% world trade |
| Strait of Hormuz | Persian Gulf & Gulf of Oman (Arabian Sea) | Iran & Oman | World's most important oil route, 20% of global oil |
| Palk Strait | Bay of Bengal & Palk Bay | India & Sri Lanka | Separates India from Sri Lanka, Adam's Bridge/Ram Setu nearby |
| Strait of Gibraltar | Mediterranean Sea & Atlantic Ocean | Spain & Morocco | Only sea link between Mediterranean and Atlantic, 14 km wide |
| Bering Strait | Arctic Ocean & Pacific Ocean | Russia (Asia) & USA-Alaska (North America) | Separates Asia from North America, narrowest point ~85 km |
| Strait of Dover | English Channel & North Sea | England & France | Narrowest part of English Channel, ~34 km, Channel Tunnel runs beneath |
| Strait of Bab-el-Mandeb | Red Sea & Gulf of Aden (Arabian Sea) | Yemen & Djibouti/Eritrea | Key oil route, 'Gate of Tears' |
| Strait of Bosphorus | Black Sea & Sea of Marmara | Turkey (Europe & Asia sides) | Separates European and Asian Turkey, Istanbul sits on it |
| Strait of Dardanelles | Sea of Marmara & Aegean Sea (Mediterranean) | Turkey | Also called Hellespont, links Black Sea route to Mediterranean |
| Strait of Mozambique | Between Madagascar & Mainland Africa | Mozambique & Madagascar | Longest strait in the world (~1,600 km) |
📖Major Canals of the World
| Canal | Connects | Country | Opened | Key Facts |
|---|---|---|---|---|
| Suez Canal | Mediterranean Sea & Red Sea | Egypt | 1869 | 193 km long, no locks, shortened Europe-Asia route by ~7,000 km, nationalized by Nasser in 1956 |
| Panama Canal | Atlantic Ocean & Pacific Ocean | Panama | 1914 | 82 km long, uses lock system, built by USA, transferred to Panama in 1999 |
| Kiel Canal | North Sea & Baltic Sea | Germany | 1895 | 98 km long, busiest artificial waterway in the world |
📖Suez Canal vs Panama Canal
📝Important Points to Remember
- •Strait of Hormuz is called the world's most important oil chokepoint — 20% of global oil passes through it
- •Palk Strait and Palk Bay separate India from Sri Lanka; Adam's Bridge (Ram Setu) is a chain of limestone shoals between them
- •Bosphorus + Dardanelles together connect Black Sea to Mediterranean Sea (through Sea of Marmara)
- •Strait of Mozambique is the LONGEST strait in the world (~1,600 km)
- •Ten Degree Channel separates Andaman from Nicobar Islands (India)
- •Nine Degree Channel separates Lakshadweep from Minicoy Island
- •Eight Degree Channel separates Maldives from Minicoy (India)