Slide 13 is actually a land-based flow-through system. By their very nature, based on the fact they are flow-through systems, they do need to be next to a high-quality water source. Likewise with slide 14 on the recirculating aquaculture systems, they also require a high-quality water source. So if you're talking about salt water systems, then yes, they need to be close to a salt water system. If it's a freshwater system, then the portability or the range in geography is a little bit larger at that point.
On October 27th, 2011. See this statement in context.