1. Season salmon fillets lightly with salt and pepper.
2. Preheat a large, heavy frying pan over medium-high flame, and add oil. When the oil is hot, add the salmon fillets, flesh-side down, and sear until golden brown and crisp, about three minutes.
3. Turn fillets over and sear skin-side down until salmon is just cooked through, about three minutes. (You may need to cook it a few minutes more over low heat if you want it well done.) Remove salmon from pan.
4. Let cool for a few minutes and serve with salsa.