Scientists have identified the only animal on Earth immortal, RBC. Unusual jellyfish, called Turritopsis nutricula, has the unique ability to rejuvenate itself indefinitely.
Jellyfish of this type of relatively high: only 4-5 mm in diameter. And unlike most of the jellyfish, who after taking part in the reproductive cycle of dying, Turritopsis Nutricula after mating back to the juvenile stage.
Today it is the only known representative of the fauna of scientists capable of such a rejuvenation. Theoretically, such a cycle of a jellyfish is able to do forever, making it potentially immortal. These creatures represent a class gidrozoev die only if they eat or kill. According to one hypothesis, the cells in the body of the jellyfish are transformed and converted from one type to another.
At present, marine biologists and geneticists are studying closely jellyfish to trace the transformation of cells from one form to another, known in science as transdifferentsiatsiya.