<http://schema.org/about>
"The Mediterranean Sea is especially sensitive: there are large populations of people surrounding its shores and the influx of water with the other oceans is limited by the narrow straits of Gibraltar. Not only pollution, but also other man-caused"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/natural-sciences/ecoocean-when-the-eco-ship-comes-in.html>