A bit that I found particularly interesting is where it talks about what happened to krill (the whales food) when the whales disappeared. Krill didn't go up, as

A bit that I found particularly interesting is where it talks about what happened to krill (the whales food) when the whales disappeared. Krill didn't go up, as you'd expect from a normal prey-predator relationship but it went down, because absence of whales had an impact on other species (algae) which the krill depended on. It is very difficult to know what the impacts of one or another species going away might be, nature is incredibly complex, and we are always playing catch up. Even though the whales numbers are going up, and I love that, I don't really take this as the good news I want them to be because I know we are causing so many changes that it's pretty much impossible to tell which species will survive these changes and which will not. And I guess a pessimist part of me thinks that none of the big animals will have it very easy, I just don't know if they are as adaptable as they will need to be.