You've probably seen them before: photos where half of the image is underwater and the other half is above. At first, you might think these photos are edited, but that's not the case. These photos were taken with a special GoPro accessory: a GoPro dome port. A GoPro dome port is a waterproof dome into which you can attach a GoPro or other action camera. This dome keeps the water out and therefore ensures that the waterline is clearly visible. This allows you to take a sharp photo of what's above and below the waterline. In this blog post, we'll discuss exactly what you need to take a split-level water photo, along with helpful tips for the best result.