The ornamental design for an inflatablepenguin, as shown and described.
The patent or application file contains at least one drawing executed in color. Copies of this patent patent application publication with color drawing(s) will be provided by the Office upon request and payment of the necessary fee.
FIG. 1 is a front left perspective view of an inflatable penguin showing my new design;
FIG. 2 is a front, right perspective view thereof;