I'd take the bear in a second.
*It's hard to say you can just punch the shark in the face. You would have to rely on the shark coming, at least partially, above water to have a chance at hitting it hard enough. How the fuck are you going to see the shark clearly, for one? Most water isn't crystal clear, and even if it is, images are distorted in water.
Good fucking luck hitting a shark underwater(where you move painfully slow if trying to punch anyway, you couldn't even scare me away punching me underwater, much less a shark trying to eat you). I'm assuming this isn't a 2-4 foot shark either. It's at least something that if you punch is going to have forward movement before going backwards with wide-open jaws of DOOM.
*We can likely all run faster than we can swim. I doubt the bear can run 100yards in 3 seconds, thats ridiculous even at top speed.
*If we got caught by both in each given situation, I'd rather be beaten into unconsciousness rather than eaten and digested alive. (Or left has half a torso floating)
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