This video showcases a vibrant underwater scene in an aquarium. The aquarium is filled with clear water, and the bottom is covered with small, multicolored pebbles. There are several fish swimming around, including a bright orange fish and a black fish with white stripes. The fish are swimming in different directions, some near the top of the tank and others near the bottom. The aquarium is also decorated with green plants that sway gently with the water's movement. The overall atmosphere of the video is peaceful and calming.