Prepare all ingredients by chopping the mint leaves and measuring out the watermelon, feta, and liquids.
Place the cubed watermelon into a large mixing bowl, ensuring even distribution of pieces with a vibrant, juicy appearance.
Add the crumbled feta cheese over the watermelon, creating a contrast between the bright red and white crumbles.
Sprinkle the chopped mint leaves over the mixture, distributing evenly, and pour the olive oil and lime juice on top.
Toss gently using a large spoon or salad tongs until the ingredients are well combined and coated with the dressing.
Transfer the salad to a serving platter or individual bowls, then serve immediately for a fresh, juicy, and colorful presentation.