There is dispute about whether any product leaked from the tank. Vaughn says “not a drop spilled into the ocean,” while a commercial diver says he swam through a pink cloud of biomatter while assessing the situation. The Department of Fisheries and Oceans says heavy wave action on Monday caused the trailer to shift and roll off the deck of the landing craft, which is similar to a barge. It says the Canadian Coast Guard attended the scene and no one was injured or required rescue. The tank trailer came from Cypress Harbour, an aquaculture site owned by Cermaq Canada. The department says the tank trailer remained afloat and was towed into Duncan Bay. The silage will be transferred to a land-based rendering facility, it says.