The video shows a close-up of a rocky structure in an aquarium. The rocks are of various sizes and shapes, with some appearing jagged and others more rounded. The colors of the rocks range from light beige to dark brown, with some areas covered in algae or other marine growth. The water surrounding the rocks is clear, and there are no visible fish or other aquatic creatures in the frame. The camera moves slowly, allowing viewers to take in the details of the rocky structure.