"Z's Reef Marine Preserve" is defined as waters and bedlands inside a line beginning at the extreme low water line on the northeast side of Fox Island at 47°14.56'N, 122°35.98'W, then extending 0.5 nautical mile northwesterly along the extreme low water line to 47°14.96'N, 122°36.37'W, then northeast to the minus eighty-five foot depth contour (MLLW = 0 feet) at 47°15.00'N, 122°36.30'W, then southeasterly along the eighty-five foot depth contour to 47°14.67'N, 122°35.81'W, then southwest to the point of origin.