Not sure if it was the purple colour?
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I don't see the sharks going after video lights - I see sharks waiting to be fed going after a diver who keeps pushing them away... and lots of photograpkers taking pics of this behavior - with sticks to poke at the sharks they lured in...Not sure if it was the purple colour?
They love to bump cameras. Not sure what it is, but if your shooting in a group of sharks you are almost guaranteed a couple bumps.