Will dives in the competition using goggles that only cover his eyes. All depth diving must be done with a proper scuba mask that covers your nose as well, to allow for mask pressure equalization. If a diver's mask is not equalized during descent, the relative negative pressure can produce petechial hemorrhages in the area covered by the mask along with subconjunctival hemorrhages. Diving this way beyond 10m can cause even more severe barotrauma.
According to Sophie Will broke the free diving depth record at 80 meters, however, Herbert Nitsch hit a free diving depth of 214 meters three years before this.