The video shows a red crab with a hard shell and long legs walking on the sandy bottom of a clear ocean. The crab's movements are slow and deliberate as it navigates the underwater terrain. The water is clear, allowing for a detailed view of the crab and the ocean floor. The crab's shell is a vibrant red color, contrasting with the pale sandy bottom. The crab's legs are long and jointed, allowing it to move smoothly through the water. There are no other creatures visible in the video, and the crab is the sole focus. The video provides a close-up view of the crab, allowing for a detailed observation of its physical characteristics.