STEP 1/3
Wash the skin of the watermelon clean and cut it in half.
Scoop out about of watermelon into bite-sized pieces using a spoon.
Grind the remaining watermelon in a blender without separating the seeds, support it in a fine state, and make watermelon juice and cool it in the refrigerator or freezer.
Cut the melon in half, remove the seeds, scoop it out with a scoop or spoon, and wash the blueberries in running water.
STEP 2/3
Place watermelon, melon, and blueberry in a large bowl, pour chilled watermelon juice and float ice.