What about shooting macro?
Yes, you can shoot macro with this setup.
That is one of the desirable features of this rig. The included lens and port offer a good compromise to both macro and wide angle shooting. This allows a diver to enter the water with just one camera, and shoot both types of subjects if desired. You don't have to commit to one type of subject or another for any given dive. If a person was interested in shooting at the extreme ends of the spectrum (fish-eye wide angle or ultra-close-up macro) then just add the appropriate lens or port to accommodate this type of shooting.