Think there's no mystery left in the world? These images from Under the Sea 3D (now playing in IMAX theaters) might change your mind. Directed by underwater filmmaker Howard Hall, the film involved more than 350 hours of diving and 110 days at sea, topped off by the task of transporting, assembling, and breaking down more than 8,000 pounds of specialized equipment. These images represent some of the best stills from the film.

This venomous species of lionfish was discovered only two years ago off the coast of Indonesia. A sting from any one of its 18 dorsal fins can cause nausea and breathing difficulties, though it won't kill you. The lionfish uses its fins to back shrimp, crabs, and smaller fish into a corner, and then swallows the prey in one quick strike. The crew was able to nab this shot because the subject was busy at dinner.