In a blender, puree watermelon, then strain using a fine mesh sieve. Reserve 1 1/2 cups of watermelon juice and set aside.

Combine remaining watermelon juice with coconut water and lime juice, then pour into popsicle moulds. Freeze for 2 hours, then insert popsicle sticks if needed. Continue freezing for at least another 6 hours before serving.

Mix remaining 1 1/2 cups watermelon juice with 1 cup coconut water and juice of half a lime. Set aside until ready to serve cocktails.

Once popsicles are frozen, divide watermelon juice mixture into 6 different glasses, sticking a popsicle in each one then garnishing with a wedge of watermelon and a slice of lime.