 If you're in pretty murky water, then a shark could almost accidentally bump you. But oftentimes, if you're bumped by a shark, you might be standing in a school of baitfish. You know, if there's all sorts of small silvery-looking fish swimming around you and then a shark actually bumps into your ankle or your knee, well, it's just trying to follow those baitfish. So it would typically not be intentional.