The video captures a large shark swimming in a tank of water. The shark is seen swimming around the tank, moving its fins and tail as it navigates the water. The tank appears to be a controlled environment, possibly an aquarium or marine research facility. The water is clear, allowing for a good view of the shark's movements. There are no other visible creatures in the tank, and the shark is the main focus of the video. The shark's size and movements suggest that it is a mature and healthy specimen.