Deinococcus radiodurans
This species is known by the Guinness Book Of World Records in 1998 as the world's toughest known bacterium. It is capable of surviving cold, dehydration, vacuum, acid, space, and 5,000 grays (500,000 rads) of ionizing radiation, making it a polyextremophile.
Photo credit: U.S. government employee work; public domain. Multiple laboratories credited and every source is a dead link.
















