He nods at the thoughts about why the sientists would not have noticed a giant shark, should it be there. That does make sense.

"Something out on the Greens-

oh. You mean the thing that those who carried it away marked with the yellow fan sign? I don't think that was directly related," he informs Walter with regret in his voice. "That was just Mr Evil hiding something in the stack of wood they had there.

Mr Helpful felt that a human should be tipped off about it."