Lost medium-sized harmonica with Caribbean theme and personal scratch marks near the beach in the Florida Keys.

I was sitting on the beach near Key West, playing some tunes on my harmonica, and I must have dropped it while catching the last rays of the sun. It's a medium-sized harmonica with a caribbean theme design and bares personal scratch marks on the back. I retraced my steps, but unfortunately, it seems that someone may have picked it up. I'm really hoping it finds its way back to me!