iOS users who use Google Earth should take note that Google has released Google Earth 3.1 for iOS devices, allowing you to explore underwater landscapes and terrain from your iOS device without having to get yourself wet. You can dive below the ocean’s surface to explore underwater canyons or even travel to the ocean’s deepest point, Mariana Trench. Once you’re underwater and where you want to be, you’ll be able to swipe the screen with two fingers and look around. The latest version also offers support for the new Retina Display, so if you’ve got the iPhone 4 or latest iPod touch, you’re in luck!