Prepare the Marinade: In a mixing bowl, combine the juice of 1 orange and 1 lime, 1 tablespoon olive oil, chopped cilantro, and chopped parsley. Season with salt and pepper to taste.
Marinate the Salmon: Place the salmon fillets in a shallow dish and pour the marinade over the top. Let it marinate in the fridge for 15-20 minutes.
Preheat the Grill or Oven: If using a grill, preheat it to medium-high heat (375°F). If using an oven, preheat to 375°F.
Cook the Salmon: Grill or bake the salmon for 10-12 minutes, or until it flakes easily with a fork. If grilling, brush with more marinade halfway through.
Serve: Plate the salmon and garnish with extra fresh herbs if desired. Serve with your favorite side dish.