Prepare two glasses and slide a lime slide across the rim of the glasses. Dip the rim into sea salt to coat the rim. Set aside.
Using a high-speed blender, blend watermelon, strawberries, water, lime juice, and honey. Blend for 15-20 seconds until a thick liquid. Add an extra splash of water if your blender needs some extra help.
Pour the margarita into the glasses and serve with lime slices.
Notes
All nutrition facts are estimations and will vary.