01 - Place the watermelon cubes, quartered strawberries, and blueberries in a large mixing bowl.
02 - In a small bowl, whisk together the fresh lime juice, lime zest, honey or agave syrup, and a pinch of sea salt until fully combined and the honey has dissolved.
03 - Drizzle the lime-honey dressing evenly over the mixed fruit. Gently toss with a large spoon or your hands to coat all pieces without mashing the delicate berries.
04 - Sprinkle the chopped fresh mint leaves over the fruit salad and give one final gentle toss to distribute the mint throughout.
05 - Refrigerate the fruit salad for at least 10 minutes to allow flavors to meld. Serve cold in individual bowls or as a side dish.