It's a really good question. I get asked that a lot.
There's not so much that we can do to fix the ocean. The issue is climate change. These warm periods that we've had are clearly occurring more frequently. They're more intense. The warm water that you speak of is not just warm—it's extraordinarily warm. It's three to four degrees Celsius above the long-term average. That's something that no statistician would expect to see, right?
These are strong environmental trends that are causing the decline, particularly of things like Fraser sockeye salmon. One of the reasons we're seeing differences in different stocks of salmon and different species is that they don't all use the ocean in the same way. The very poor returns of pink, chum and sockeye salmon are because they are the open ocean residents. Coho and chinook have different types of life histories and use of the ocean, so you can see better returns there than with some of the others.
There is no question that we have to understand the ocean so that we can advise what we have to do to protect salmon in the future, but you're not going to change the ocean until we grapple with climate change.