The video shows a crab moving around in the sand. The crab is mostly gray in color, with some brown spots on its shell. It has long, thin legs and claws that it uses to dig into the sand. The sand is light brown and appears to be wet, as there are small puddles of water around the crab. The crab moves slowly and deliberately, using its claws to dig and its legs to walk. There are no other animals or objects visible in the video.