This is such a refreshing combination of summer flavors.  All of the flavors and textures compliment each other quite nicely.

-5 cups watermelon, diced
-2 cups cucumber, diced
-1/2 cup feta cheese
-fresh basil or mint, chopped
-1 Tbsp lime juice
-1/2 Tbsp sugar
-1/2 tsp salt

Whisk together lime juice, sugar and salt.  Toss with remaining ingredients.  Wait at least 1 hour before serving.