The video shows a series of images of a diagram of a swimmer's ear. The diagram is colorful and detailed, with labels for the outer ear, middle ear, and inner ear. The ear is shown in a side view, with the ear canal labeled as the area where the infection occurs. The diagram is labeled as "Swimmer's Ear" and includes a red arrow pointing to the infected area. The video also includes text that reads "It's caused by water in the ear canal."