The camera cannot properly shoot images underwater
By inserting the camera in the waterproof case, the camera is operable in water depths up to 5 meters.
However, when recording images underwater with the camera in the waterproof case, the images may appear less clear than those of normal recording. This is because the camera may fail to correctly focus, or the subject gets distorted, due to the alteration in the refractive index. This means that the visibility gets muddled when underwater, because water is denser than air, and is not caused by a malfunction of your camera.