It lives in water with salt. The average ocean pH value is 8.1. It’s a brain coated with a thin bit of goo.

My stomach is about 1.5 pH.

You could easily go through a waterslide, but if I change the water to be hydrochloric acid, you’re not gonna come out as fresh as you went in. And most skin on the face and body has a pH of between 4.7 and 5.75.