The video shows a close-up view of a coral reef in an aquarium. The reef is made up of various types of coral, including branching, plate, and mushroom corals. The colors of the corals range from purple, pink, to green, and they are illuminated by a blue light that gives the water a deep oceanic feel. The sandy bottom of the aquarium is visible, and there are small particles floating in the water. The camera pans slowly across the reef, allowing viewers to observe the intricate details of the corals and their textures.