Place strawberries, 1-1/2 cups ice, 1/2 cup water, 1/3 cup lime juice, 1/4 cup orange juice and 2 tablespoons simple syrup in a blender. Puree until smooth. Transfer to a pitcher or bowl.
Rinse out the blender jar. Place mango and the remaining 1-1/2 cups ice, 1/2 cup water, 1/3 cup lime juice, 1/4 cup orange juice and 2 tablespoons simple syrup in the blender. Puree until smooth.
Decoratively layer the two margaritas in 6 glasses. Leave the layers distinct or partially stir together for a swirled design.
