Tuna _are_ lean, mean, killing machines.
> No way are they going to model the look on a harmless fish when they can make it look like a lean mean killing machine.
Tuna can swim 75km/h and are very active, efficient and deadly predators. They are just as much lean, mean, killing machines as are sharks. They just don't happen to mistakenly attack H. sapiens the way sharks do. ;)
I'm not sure being attacked by a 2m tuna would be much better than being attacked by a 2m shark...