The video shows a group of crabs moving around in a dark environment. The crabs are black and have blue lights on them, making them glow in the dark. The crabs are of different sizes and are seen crawling over each other. The camera moves around, capturing the crabs from different angles. The crabs appear to be in a confined space, possibly a tank or a container. The video is shot in a way that highlights the glowing blue lights on the crabs, making them the main focus of the video.