The Devil Worm
Can survive: Crippling pressure, lack of oxygen, high temperature.
This species of nematode, only recently discovered in 2011, has been found living up to 2.2 miles below the surface of the Earth. It blew away the previous record for multicellular organisms by a full mile. These worms spend their lives in total darkness, drinking 12,000 year old water and eating simple bacteria.
