The video shows a close-up of a sea urchin with its spines moving. The sea urchin is red and black in color and is seen moving its spines in a circular motion. The background is blurred, but it appears to be underwater with some rocks and plants visible. The sea urchin's spines are long and thin, and they move in a coordinated manner. The video is shot in a way that focuses on the sea urchin, making it the central object of the video.