Check out this underwater video of divers feeding penned bluefin tuna in Greece. Raising bluefin inside large floating pens has become big business, but I had no idea they were in Greece too. Not much other info, but pretty neat, laid-back feeding by the tuna.
As the diver shakes more food free, there is always a tuna lined up for a casual, but swift attack.
More Bluefin Feeding HERE
Diving and Feeding Bluefin Tuna