The video shows a close-up of a crayfish in a tank. The crayfish is moving around the tank, and the camera follows its movements. The tank appears to be well-maintained, with clear water and a variety of decorations, including a large rock and a green plant. The crayfish is predominantly blue and orange, with long antennae and a hard shell. It moves its legs and claws in a slow, deliberate manner, exploring its surroundings.