"I'd like to share a revelation that I've had during my time here. It came to me when I tried to classify your species and I realized that you're not actually mammals. Every mammal on this planet instinctively develops a natural equilibrium with the surrounding environment but you humans do not. You move to an area and you multiply and multiply until every natural resource is consumed and the only way you can survive is to spread to another area. There is another organism on this planet that follows the same pattern. Do you know what it is? A virus. Human beings are a disease, a cancer of this planet. You're a plague and we are the cure." 
There is no chance any animal/fish is going to survive the brunt of us 9 billion in next fifty years.
I won't be so sure considering that unlike a Virus we are aware of the damage we are causing and are already trying to mitigate it.
In this dynamic, we as a virus race will choose the easiest way out even at the cost of all the species of this planet. 9 billion of us will, mark my words, only kill, eat or ridicule whatever that is left of the ecosystem today.
I am actually afraid about cannibalism picking up too in distant hungry countries which are already off balance today. It's pretty grim.
Dolphins will continue to be enslaved, slaughtered or even ridiculed for any "equal treatment" justified exactly the way this thread shows. Ground reality will of course be worse.
To which I do agree with your statement that "we are aware" and that there is an exit for us even though some will definitely try to mitigate, protect and stay behind.
I'll take that bet.