 In that migration, the Ojibwe had, following a prophecy, followed a "miigis" (cowry) shell to a place where "food grows on water," a prophecy held to be fulfilled when they reached the wild rice waters of Wisconsin.Neither Stone nor Couture knew what the white powder in their dreams was until the EPA's announcement of the sulfide shipment.The Anishinabe Ogichidaa activists made a point of carrying out the blockade in a way that was consistent with their beliefs.