On the heels of Ocean Bathymetry and Ocean Layer for Android, Google Earth team has brought Google Earth 3.1 for iOS, with same capabilities.
Now the iOS people could explore the ocean floors or terrain with your iOS device. The navigation is a easy once you are under water, you can swipe with two fingers to look around. Also the photos and videos that are available to the Google Earth desktop is available iOS version as well.
iPhone 4 users will have even a sharper view as the app supports retina display.
You can get the app from the APP STORE or visit http://m.google.com/earth in your mobile browser.
Google LatLong: Ocean comes to Google Earth for iPhone, iPad and iPod touch