Instructions

Cut the watermelon in half and, using a melon baller, scoop the watermelon into balls. Collect the formed balls in a bowl, and pour off the excess juice that collects in the watermelon into another bowl or pot to use for later.
Slice the strawberries, rinse the blueberries, and combine with the watermelon balls.
Julienne the mint, setting aside 1 tablespoon for garnish, and combine with 3 cups of the reserved watermelon juice and the honey in a medium saucepan. Bring to a boil over medium-high heat. Reduce the heat slightly and cook, stirring frequently, until the liquid has reduced by half. Once the liquid has reduced, strain the mint pieces, remove from heat and chill.
Pour the watermelon-mint syrup over the fruit. Sprinkle the chia seeds on, toss to combine, and serve cold.