Drizzle 1 tablespoon of olive oil over the outside of each bag and rub it with your hand until all surfaces of the bag have absorbed the oil.
Rinse fillets, then pat dry. Season both sides with salt and pepper.
In a small bowl, mix soy sauce, lime juice, and ginger.
Set bags on their broad side and place one fillet flat inside each bag. Then, using a tablespoon, reach into the bag and spoon one quarter of the soy-lime-ginger mixture over each of the fillets. Force excess air from the bags, roll up the open ends and tightly crimp to seal shut.
Bake on a cookie sheet for 10 minutes.
Combine all salsa ingredients in a bowl and mix thoroughly with a fork.
To serve, tear a small slit in the bags, peel back the paper just enough to expose the fish, then spoon Papaya Salsa overtop of bag. Serve immediately.