Quick suggestions. I know you have time issues.
What happens to these animals when they go to sea? The short answer is we don't know enough about that. There are some technology solutions and so on that need to be in place. But when they leave their streams, their bays, and so on, where do they go, and why don't they come back?
The second thing, you mentioned weird things happening at sea, not very scientific. Another way of putting it is we know for sure that ocean conditions are changing, we can see that over time. What we're struggling with is how you walk that back to an impact on, in this case, Atlantic salmon, or on your coast, other salmon.
If you look at habitat as a key factor, it's always better to have better quality and more habitat.
But the direct link to productivity and what happens to these animals when they leave their core habitat base, we're still struggling with that. More monitoring of the environment and more monitoring of ocean conditions, and then more effort on what that means to walk that back to the individual species, from our point of view, is critical.