Keep in mind that if someone has fed one, it can change the game.
Here's a link to a blog on Undercurrent; scroll on down to the paragraph above Conclusions.
"The most horrifying barracuda attack story I’ve heard was on such good authority that it bears repetition. It was told to me by the Dive Master at the College of the Virgin Islands Marine Laboratory. He had taken a DAN course on decompression chamber operations in St. Thomas, and the lecturers had included a standard lecture on dangerous marine organisms. They had shown photos of the usual known possible hazards like sharks, sting rays, moray eels, fire worms, long spined black sea urchins, etc., and ended with a barracuda. Then they said that the last one was just a joke to see if people were awake, there was not a single known case of an unprovoked barracuda attack, so this was not a real problem at all! At that point a medical doctor taking the course raised his hand, and excuse me, that isn’t really correct”. He then described an incident some years before in which two divers had traditionally dived at the same location every week, and would bring food to feed a large friendly barracuda that frequented the site. One day they dived at the usual location in their usual dive suits, and their finny friend was waiting for his handout, but they had forgotten to bring it. The first diver held his empty palms in front of him to indicate, “sorry big boy, no food for you today”. The barracuda bit both of his hands off. The second diver hugged his hands under his armpits to protect himself, and the barracuda bit and savaged both of his forearms so that they “looked like meat that had been through a grinder”. The person telling this story to the class ended by saying that “I was the physician who had treated them both afterwards”."
When you're in an area where lion fish are often hunted, and a large barracuda follows you around, there may be no relation, and it's strictly speculation on my part as what these guys were doing wasn't necessarily the same thing, but...well, might be worth being aware of.
Richard.