Snorkel mask

[0001]FIG. 1 is a front perspective view of a snorkel mask, showing my new design;

[0002]FIG. 2 is a left side view thereof, with the right side view being a mirror image;

[0003]FIG. 3 is a front view thereof; and,

[0004]FIG. 4 is a back view thereof.

[0005]The broken lines in the drawings depict portions of the snorkel mask that form no part of the claimed design.