The video shows a close-up of a yellow coral with a brain-like appearance, sitting on a rock in an aquarium. The coral has a vibrant yellow color and a textured surface that resembles a brain. The rock on which it is sitting appears to be part of a larger coral reef structure. The aquarium is lit with blue light, which enhances the yellow color of the coral and creates a calming underwater atmosphere. There are no other visible creatures or objects in the video, and the focus remains solely on the yellow coral and its immediate surroundings.