The video shows a shark swimming in a tank. The shark is moving around the tank and is the only animal visible in the video. The tank appears to be well-lit, and the water is clear, allowing for a good view of the shark. The shark is a large, grey fish with a streamlined body and sharp teeth. It moves gracefully through the water, occasionally turning and twisting its body. The tank seems to be a large enclosure, possibly in a public aquarium or marine park. There are no other objects or animals visible in the video.