The world's oceans hide some amazing secrets. Miles below the surface, where sunlight can no longer penetrate, exists an eerie world of cold darkness. It is an alien world of strange and sometimes grotesque forms. The unusual creatures that have evolved here have managed to adapt to the intense pressure, cold, and lack of sunlight. 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 deep sea creatures. 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.