That shark you saw isn't tethered to the pier, and you have just as good a chance of being bitten a mile from the pier....
....or should I say, just as BAD a chance, because the odds are greater that you'll be hit by lightning, bitten by a rattlesnake, or stung to death by a wasp or bee, than being attacked by a shark.
You guys did the right thing by leaving the water when you saw the shark, but I can assure you that there were many more out there that you didn't see. If people knew what's swimming right outside those breakers, many would be going to the mountains for vacation.
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