In a food processor or blender, add the watermelon and make a smooth puree.
Strain and separate pulp from juice.
Pour the juice into a jug; add the pineapple juice and ice; stir well.
Take 4-8 oz glasses and fill each glass to 3/4 full.
Add 1/4 cup of club soda and garnish with mint and lemon wedge.
Serving Size 1 (6.5 oz)
* Percent Daily Values are based on a 2,000 calorie diet. Your daily value may be higher or lower depending on your calorie needs.