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The ornamental design for a swimming fin, as shown and described. |
FIG. 1 is a perspective view of my swimming fin;
FIG. 2 is a right side elevational view thereof;
FIG. 3 is a bottom plan view thereof;
FIG. 4 is a left side elevational view thereof;
FIG. 5 is a top plan view thereof;
FIG. 6 is a front end elevational view thereof; and,
FIG. 7 is a back end elevational view thereof.
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