Ok, I saw the episode finally. Re-ran last nite. I saw the water we are talking about. I think when Bear hurt his shoulder the drugs they gave him affected his cognitive reasoning centers.

Of course, we are taking it on faith that he used the vile, nasty, evil looking, bird poopy ridden, water we saw him scooping out of the hollow in the rock - the same water he contamnated a canteen cup and canteen with. Why, Bear would not lie to us would he?

Let's take what we saw with a grain of salt (pun intended) and file it away as a just another virtually useless survival fact.

What really got me was when he was recovering the ship's rope. He wondered if it would float. Well freaking duh... if it didn't float how did it come to be at the island and not on the sea bottom. I swear, sometimes common sense totally escapes that man.