Peel the orange and grapefruit so that the white skin is completely removed. Fillet both fruits, catching the juice. Break open the pomegranate and remove the seeds.
Sort, clean, wash and drain the salads. Arrange evenly on four plates and drape the fruit fillets on top.
Whisk the oil with the fruit juice, vinegar and honey. Season with salt and pepper.
Drizzle the marinade over the salad. Finally sprinkle the pomegranate seeds and walnuts on top and serve.