 Okay, but can I bring my bling to the beach? Flash from a metal object, a quick flash of light from a metal object mimics the natural kind of flashing of a light on the scale of a fish. So if a shark was in the water near you and you had the sun shining off of a shiny piece of jewelry, a shark might mistake that for a normal type of bait fish that it would pursue. And, you know, you might end up getting a little nip. That's Sean Bites.