I cant tell if this person is being serious.

If you're ever in Central Europe, I'd advise you to try a bograč goulash. It has to be prepared with at least 3 different sorts of meat, including beef, pork and venison. It's delicious.

Wrong! There is absolutely no evidence that depleting the seals population will bring back the fish population. There are less fish because humans are over fishing. Some people are just so lazy, and refuse to take blame. Grow some stuff? Go to the store, buy some bread, eat a sandwich! Did you know the tuna population has gone down like 80% in the last 60 years because humans over fish.

Because we just don't eat seals. It's weird.

There are two big differences between slaves and pets though. 1) Pets aren't for labour, 2) A lot of pet species wouldn't be able to survive in the wild.

That said, there definitely needs to be a regulation of which animals we can keep and which we can't. And we should also do more effort on making sure that people don't mistreat their pets.

Cause look at fish then look at a seal. One is obvious food and the other isn't.

That's factually incorrect.  Seal meat is eaten quite a bit.

You're very smart.

Uhm where?

The Canadian province of Newfoundland, for one.  And Northern Canada as well.  This is fact.