The snorkel idea isn't as far out as you might think. A duck hunter got caught on the mud flats near Anchorage years back. Feet stuck solid and the bore tide started coming in. Someone got to him with a boat but couldn't pull him out; a rescue helicopter was called. By the time the helo arrived, a Hughey I think, the hunter was totally submerged and breathing through the boat guys shotgun barrel. They tied onto him with the heli and tried to gently pull him out... no luck. They pulled him in half in the effort. Pretty gruesome I'm sure. He is only one of many who have gotten stuck in those flats on foot and been drowned by the bore tide.
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