Nautical 1
![Ocean currents in the north Atlantic](http://upload.wikimedia.org/wikipedia/commons/thumb/c/c4/Ocean_currents_1943_Gulf_Stream.png/300px-Ocean_currents_1943_Gulf_Stream.png)
Ocean currents in the north Atlantic.
Nautical 2
Nautical 3
![The Mid-Atlantic Ridge](http://upload.wikimedia.org/wikipedia/commons/thumb/7/76/Mid-atlantic_ridge.jpg/300px-Mid-atlantic_ridge.jpg)
The Mid-Atlantic Ridge is a mostly underwater mountain range of the Atlantic Ocean and Arctic Ocean.
Nautical 4
Nautical 5
Nautical 6
![Relief map of the Mediterranean Sea](http://upload.wikimedia.org/wikipedia/commons/thumb/2/2c/Mediterranean_Relief.jpg/300px-Mediterranean_Relief.jpg)
Shaded relief map of the Mediterranean Sea.
Nautical 7
![Exploration of the Hudson Bay](http://upload.wikimedia.org/wikipedia/commons/thumb/2/2e/Hudson_bay_explorer.png/300px-Hudson_bay_explorer.png)
The routes followed by the principal explorers of Hudson Bay, from 1497 up to 1905.
Nautical 8
![The Strait of Hormuz](http://upload.wikimedia.org/wikipedia/commons/thumb/7/7a/Strait_of_hormuz.jpg/300px-Strait_of_hormuz.jpg)
The Strait of Hormuz separates Iran to the north and the Musandam Governorate of Oman and the United Arab Emirates to the south.