Recently, I learned that Google maps are now being developed for the world's underwater world. Treehugger's article, "Google Unveils Stunning Underwater Street View" (9/26/2012) describes Google's partnership with Catlin Seaview Service to map underwater environments.
Underwater views range from Hawaii, to the Great Barrier Reef to the Philippines. For example, see the Google Maps Ocean collection. Remarkable how the technology that has rapidly spread on land for directions and landmarks is now taking to the sea.
I hope the fascination with these ocean maps helps to motivate enthusiasts to take action to get in the water and protect marine biodiversity.