Published today, this is the most detailed map of the ocean floor ever produced, using satellite imagery to show ridges and trenches of the earth’s underwater surface even for areas which have never been surveyed by ship. Data on slight variations of the pull of gravity over the oceans are recorded with satellite altimetry, and are then combined to map the seafloor. The map, created using WebGL by the University of California San Diego, is not viewable using older browsers, but you can see excerpts here. Drag the globe to rotate or right-click and drag to zoom