Slice the cucumber into thin slices using a sharp knife and place in a mixing bowl.
1 large cucumber
Add the cubed watermelon to the bowl with cucumber slices and gently toss to combine, ensuring even distribution.
2 cups watermelon, cubed, 1 large cucumber
Sprinkle the crumbled feta cheese over the fruit and vegetable mixture, then gently mix to incorporate, allowing a few small melting spots on the feta.
1/2 cup feta cheese
Serve the salad in a shallow platter, then finish by sprinkling freshly ground black pepper over the top for flavor contrast.
to taste freshly ground black pepper
Optionally, add a light drizzle of balsamic vinegar or honey for extra sweetness or acidity.