In there you'll see pictures of ice hitting them, and icing up in storms, but they're really not designed to ride out a storm. The technology is such that when a storm comes along you submerge the cage, because that sort of surface air-water interface is an extremely violent place. The systems don't like it, and the fish don't like it. So the intent is that when the storms come along, you submerge the system.
On February 13th, 2012. See this statement in context.