Specifically designed for GoPro underwater photography, this Dome Port
utilizes a custom made semi-hemispherical acrylic dome that has been
optically matched to work with the GoPro lens, providing superior
optical performance and producing stunning imagery underwater. The
benefits of the dome are several, it moves the waterline away from the
lens, eliminating circular reflection and water sheeting,
dramatically improving image quality, and giving you the ability to
capture images both above and below the water simultaneously.
Also check out this roundup with some of Our Favorite GoPro Accessories