The shrimp welfare project

I love articles like this that challenge the status quo of morality. I find my self asking the question, "Would I rather save a billion shrimp or one human?" and I honestly think I'm siding on the human. I'm not saying that answer is "correct". It's always good to think about these things and the point the author makes about shrimp being a test of our morality because they're so different is a good one.

How about one million kittens or one human?

Where did the kittens come from?

If they were spawned into existence for this thought experiment, then the human, probably.

But if even one of those kittens were mine, entire cities could be leveled before I let anyone hurt my kitten.

Also, where did the human come from? Are they already on their deathbed, prolonged in this thought experiment for only a few fleeting moments? Were they themselves a murderer?