We were there the evening after it happened and talked to the owners of the cafe we normally go to. They said that this "missing" thing is well known to the trade people of the bay as "shark".
Of course, it's conjecture and we'll never know, but does make me think twice about getting my quad (sorry, wrong forum guys and gals) out tomorrow when the SW hits late afternoon and having a play - yes, there may be more chance of being in a plane crash than getting taken by a giant eating minibus, but it does make you think twice...... I mean f***!!