It is funny to me how we people think we know what animals think. Is not like we speak the same language. They could've been playing and it was amazing, or they could've been scaring the boat away with no intent of eating any one, or they cuold've been hunting and the people on the boat were lucky. Why do we people like to argue about simple, meaningless, and of no impact to human kind, like this. There are far more important issues affecting us than a whale chase.
