Google Earth Goes Deep With Ocean Simulations

@ NYTimes.com:

"On Monday, the ocean images will undergo the most significant of several upgrades to Google Earth, with the new version downloadable free at earth.google.com, according to the company.

Another feature, Historical Imagery, provides the ability to scroll back through decades of satellite images and watch the spread of suburbia or erosion of coasts."

Click a function called Touring and you can create narrated, illustrated tours, on land or above and below the sea surface, describing and showing things like a hike or scuba excursion, or even a research cruise on a deep-diving submarine.