On a safari, you are spearfishing while wading in a river. You observe a fish gliding by you. If your line of sight to the fish is below the horizontal in air, and assuming the spear follows a straight-line path through the air and water after it is released, determine the angle below the horizontal that you should aim your spear gun in order to catch dinner. Assume the spear gun barrel is above the water surface, the fish is below the surface, and the spear travels in a straight line all the way to the fish.