The video shows a close-up of a crab in the water. The crab is mostly white with some brown spots on its back. It has long, thin legs with small claws at the end. The crab is moving its legs around, possibly searching for food or exploring its surroundings. The water is clear, and there are some green plants visible in the background. The crab's movements are slow and deliberate, and it appears to be alone in the water.