Check out the latest update to The World Factbook:

• Covering more than 70% of the Earth's surface, the oceans of the world are the largest single feature on the plant and serve as the highway connecting the continental landmasses. The World Factbook announces a new and distinctive Map of the World Oceans that depicts the relationships among states across the great oceanic basins of the Atlantic, Pacific, Indian, Southern and Arctic Oceans. The map also depicts the maritime claims of the littoral states - represented by the buffer line of the 200 nautical mile exclusive economic zones. Finally, recognizing that around 90% of world trade moves by sea, the map shows a generalization of global shipping lanes and the major cargo and container ports that constitutes this vital trading network.
• The World Factbook also added 10 regional political maps to its reference repertoire. To view or use any of these maps, click on the Regional and World Maps link on the Factbook homepage or go to the References tab on the Factbook site and click on Regional and World Maps.