Very well. Try this one for the Hero6. As you can see in the link from my original comment, the filters are depth rated and get redder and redder the deeper you go;ideally you would switch between them. Realistically, I used the 20-55 ft one on the drawstring, 100% of the time, and popped it off for surface recording and night dives. Also highly recommend some type of handle/rod so you can curl the camera around some formations or get into crevices.