Step 1: Slice off the top third of the watermelon lengthwise (keep it for later). Score the fruit with a knife, then scoop out the watermelon flesh using a large spoon or ice cream scoop, and transfer it to a blender.

Step 2: Blend the watermelon until smooth. If you prefer, you can strain out the seeds.

Step 3: Stir in the white wine, rum, seltzer, and lime juice until well combined, then add the lime slices and fruit.

Step 4: Chill in the refrigerator for about 2 hours, then serve and enjoy the fruity goodness!