If I am not mistaken on my history, the NY sewers were the long time home to the Teenage Mutant Ninja Turtles

It depends on the sewage. Even bacteria die if there is lots of chemical waste innit, which was the case for a lot of so called open sewers.

It's life Jim, but not as we want it.

Reminds me of a Terry Pratchett quip about looking at the microbes in the drinking water in Ankh Morpork, along the lines of anything that could support that much life had to be healthy

Yeah, the article is good, but that headline had Onion qualities :)

Not all life is equal.