This Aquatica 8" Dome Port is ideally suited for wide-angle lenses when used in Aquatica housings. The dome is acrylic. This material is the same density as saltwater. So minor scratches will get filled in by the water and will not show.
Aquatica 8" Dome Port for All Aquatica Bayonet Style Housing
Neoprene Dome Cover (Does not fit Dome with Shade)