REAL Source: theivycottageblog.blogspot.com
So I saw this and thought it was hilarious. My husband bought a mini watermelon and I decided to have some fun with it. First I cut it at a slant
Then cut a mouth at the top.
I removed the insides with an ice cream scoop, the original poster used a melon baller. I think they were smart, I just don't own one.
Next you make a mark about 1/2 inch on the rind near the "mouth" and remove the rind (that is hard and scary, lol)
And a piece of triangle for the fin.