That's a different point though. If you have a termite infestation, you might say that they're invasive to the house and it's not their natural element. However you might also say that they live there, which is equally true.

For example, "Native Americans" did not "infest" the United States. White people did.

Do you imagine the various indigenous populations of Americas popped out of the ground like mushrooms? They're pretty far from their "natural habitat" in the plains of sub-saharan Africa... Or is that too far back in history and their "natural habitat" is in Siberia and Polynesia?

So the right phrasing would be "no, it's their natural habitat", not "no, they live there", since, and this was my point if you go back, if an animal infests something it usually lives there, making the point in the post redundant.

Yes the white folks came and made a mess of the place. Which, if sharks chose to move into your house, they would also do. Probably leave the taps running all over the place too

Damn snobbish animals living in gated communities.

And sharks regularly infest zoos?

Valid point. Although that's without their consent, whereas most humans infesting the ocean are choosing to remain there, USS Abraham Lincoln sailors notwithstanding.

Where is the fallacy?