In the video, we see a turtle in a tank with a glass wall. The turtle is green and has a red mouth. There are also several crabs in the tank, and they are moving around. The turtle is swimming and moving its head around, and the crabs are also moving. The water in the tank is clear, and we can see the turtle's shell and the crabs' legs and claws. The turtle and the crabs are the only animals in the tank.