And it was a damn good heist, because the staff at the aquarium didn't realize the shark was missing for 45 minutes.The cops have surveillance footage of the thieves and they're trying to track them down . . . but everyone's worried about the shark's chances of surviving.Horn sharks can only survive out of water for maybe an hour or two, and they need to be in warm saltwater . . . so if the thieves didn't have a tank ready for it nearby, it could be in serious danger.