The Strait of Gibraltar as seen from space.
(North is to the left: The Iberian Peninsula is on the left and North Africa on the right).
The Strait of Gibraltar is the only passage between the Atlantic Ocean and the Mediterranean Sea. The length between the Rock of Gibraltar and Morocco is only 7.7 nautical miles (14.24 kilometers, 8.9 miles) at its narrowest point. The water depth ranges between 300 and 900 meters.