I am not aware of specific examples of that in marine systems. I know a couple from terrestrial systems. The key question is that we want all of the ocean to be sustainable. Sustainability is our goal. There is no question that when we interact with these systems, we change them. Sometimes we like those changes and we call them better, and sometimes we don't and we call them negative.
Again, these protected areas, these MPAs, are benchmark systems. They are representative systems. They protect the rare stuff. Because we are so active on the rest of the oceanscape, it's hard to think of examples where we should also be doing this inside protected areas. They are protected for a reason, and there has to be a difference or delta.