Contact your dealer. Replacing that skeg is no big deal. If the uphaul line isn't in place it gets a bit trickier with needing to lead the line back into the guide tube with a skinny piece of wire but the skeg itself is simple.
If there's no dealer then ask for Dinver when you call Pyranha.
See you on the water,
The River Connection, Inc.
Hyde Park, NY
If you were close I have spare skegs for Pyranha, P&H & Venture kayaks here but start local first.