Rule 25-1(b)(ii): A ball in a bunker full of water

We’ve all encountered the following situation: playing a round following a torrential downpour, several of the bunkers are partially or completely full of standing water.  Despite all efforts to the contrary, inevitably, we flub, shank, fly, or roll a shot into one of these sandy bowls of Cholera tea. What happens next?  We probably use…