The video shows a manatee swimming in a tank. The manatee is large and has a grayish color. It is swimming slowly and gracefully, with its flippers moving in a gentle manner. The water in the tank is clear, and the bottom of the tank is visible. There are no other objects or creatures in the tank, and the manatee is the only focus of the video. The manatee appears to be healthy and well-cared for, and it moves effortlessly through the water.