Google has just released a new version of Google Earth that will let users virtually dive beneath the water surface and explore the depths of the world's oceans. The new feature, rolled out at a news conference today, includes 20 content layers with relevant information from the world's leading scientists, researchers, and ocean explorers.

Users can watch videos from the archives of Jacques Cousteau, explore everything from sea creatures to underwater volcanoes and shipwrecks and even get advice on the best water sports. There are also updates on the terrestrial side, including narrated tours and a historical imagery feature that allows users to go back and look at a particular area, like the Grand Canyon, over time. You can download the Google Earth 5.0 beta here or check a video tour after the jump.