The video features a close-up view of a coral reef with various types of corals in different colors such as green, purple, and yellow. The corals have different shapes and textures, some resembling brains and others resembling branches. There are also fish swimming around the corals, including a yellow and black fish and a blue fish with white stripes. The video pans around the tank, showing the corals and fish from different angles. The lighting in the tank highlights the vibrant colors of the corals and the fish.