In a large mixing bowl, gently toss together watermelon, cucumbers, onions, and mint
In a small mixing bowl, whisk together the olive oil, lime juice, salt, and pepper
Pour your dressing over the combined fruits and vegetables and toss gently
Top with feta cheese
Store leftovers in refrigerator up to 1 day
Pro Tip: Since this salad has high water content, you'll want to serve it immediately. If you don't think you'll be able to finish the entire salad, serve half and keep the fruits and veggies separate from the remaining dressing. Refrigerate for up to one day.Make sure you test any leftovers before eating.