The video shows a crab in a tank. The crab is moving around the tank, and its claws are visible. The tank appears to be made of glass, and the crab is the only visible creature in the tank. The crab's movements are slow and deliberate, and it seems to be exploring its surroundings. The lighting in the tank is dim, and the crab's color is a mix of gray and brown. There are no other objects or creatures visible in the tank, and the crab appears to be alone.