No matter if you’re up for some holiday selfies under the sea, or an underwater photo session, AquaTech will help you take your underwater shots with an iPhone. The AxisGo system, a waterproof housing will turn your iPhone into an underwater rig with a lens, a grip, and a few other accessories.
LINK (via: DIY Photography)
I can personally vouch for the image quality. Captured this image with my iPhone 8 wrapped in an AxisGo equipped with the optional dome while rocking and rolling in a rip off Cape Cod.