The ornamental design for a divefinorganizer, as shown and described.
FIG. 1 is a rear perspective view of a dive fin organizer, showing my new design;
FIG. 2 is a front perspective view thereof;
FIG. 3 is a front elevational view thereof;
FIG. 4 is a rear elevational view thereof;
FIG. 5 is a left-side elevational view thereof;
FIG. 6 is a right-side elevational view thereof; and,
FIG. 7 is a top plan view thereof.
The dot-dash broken lines in the figures define the boundaries of the claimed design and form no part thereof. The long dash broken lines depict portions of the dive fin organizer that form no part of the claimed design. The remaining short ash broken lines represent stitching, and are part of the claimed design.