Coral reefs are a unique world unto themselves. The tiny corals that have shaped these reefs have built them into an incredibly diverse assortment of alien landscapes. Just like their terrestrial counterparts, there are deserts, forests, jungles, hills, and mountain ranges. Just add water, and you enter the world of the reefscapes. The images in this gallery have been hand-selected by Sea and Sky for their visual beauty and represent some of the most amazing images of coral reefs around the world. Click on an image above to begin a slide show. Use the buttons under each image to navigate through the slide show. You can use the buttons on the left side of this page to select another image gallery and begin a new slide show.