Afterburner;4936902From Gizmodo, who sent it off to an expert.
Like I said, it's worms.
Yeah just found out the same thing.
Tubifex tubifex, also called the sludge worm, sewage worm, or lime snake; is a species of tubificid segmented worm that inhabits the sediments of lakes and rivers on several continents. T. tubifex probably includes several species, but distinguishing between them is difficult because reproductive organs, commonly used in species identification, are resorbed after mating, and because external characteristics of the worm vary with changes in salinity. These worms ingest sediments and gain nutrition by selectively digesting bacteria and absorbing molecules through the body wall. The worms can survive with little oxygen through the use of their hemoglobin rich tail-ends, which they wave in order to absorb what little oxygen they can. They can also survive in areas so heavily polluted with organic matter that almost no other species can endure. By forming a protective cyst and lowering its metabolic rate, T. tubifex can survive drought and food shortage. Encystment may also function in dispersal of the worm.
Wow, looks like the Zerg took over down there or something.
But shit, I don't want to be in there. Next thing you'll know, we'll get some real teenage mutant ninja turtles, lol.
And thanks for clearing up what these things really are.
Interesting video. The worms somehow remind me of the good old slime molds:
A new lifeform?
Need a Tricorder to scan it? ;) Uh! Uh! How about this:
Unknown lifeform. We are the Borg. You will be assimilated. Your life as you know it is over. From this time forward, you will service... us. Resistance is futile! =p
I didn't see the first part at first. So I just saw it driving into the tunnel further and I thought it was some rectal exam. >.>
That said, those are some pretty scary worm-things. Imaging it growing like a wall, covering the whole tunnel like some alien tissue.

It's Alex Mercer.
Question- why is someone crawling in a sewer?!