Method

Preheat the oven to 500°.
On a large rimmed baking sheet, sprinkle 1/2 tablespoon of the salt roughly in the shape of the fish. Scatter half of the butter pieces and 8 of the bay leaves over the salt. Set the fish on the salt and stuff 6 bay leaves into the cavity. Top the fish with the remaining butter, 1/2 tablespoon of salt and 6 bay leaves.
Bake the fish in the middle of the oven for about 30 minutes, or until cooked through.
Use 2 large spatulas to transfer the fish to a platter. Discard the bay leaves and serve immediately.