"The sixth "foot", which was discovered June 18, 2008 on Tyee Spit near Campbell River on Vancouver Island, was a hoax. The hoax was a "skeletonized animal paw" was put in a sock and shoe and then stuffed with dried seaweed. The hoax has been called "senseless and thoughtless", "despicable", and "reprehensible". Police have begun an investigation into the hoax, and an arrest could result in charges of public mischief."
and this is interesting: "The Strait of Georgia also happens to be the location of project VENUS, a facility used to study underwater body decomposition, among other things."
From the new Wiki entry now devoted to this subject.