Heat the oil in a large heavy sauté pan or wok over high heat . Sauté the garlic for 30 seconds and then add the shrimp. Stir-fry until the shrimp begin to cook and plump up. Add the peanuts and sauté another 30 seconds. Reduce heat to low and add the sauce. Simmer just until shrimp are cooked. Remove from heat. Stir in watermelon and serve immediately.
This recipe and many more are available at the National Watermelon Promotion Board Website http://www.watermelon.org/watermelon_recipe.asp