Prep your glass by rubbing a lime wedge around the rim and dipping it in salt, if desired.

Blend the watermelon cubes until smooth, then strain the juice using a fine mesh.

In a shaker, combine the tequila, lime juice, triple sec, watermelon juice, and a handful of ice.

Shake well until the outside of the shaker feels cold.

Fill your prepared glass with ice and strain the mixture into it.

Garnish with a watermelon slice and a lime wheel.