Scientists report first case of immortality!

In what is the first case of immortality in a living organism, scientists have recognised the Turritopsis nutriculaas as the only known animal that is capable of rejuvenating itself. 
    According to a report in The Times, jellyfish usually die after propagating, but Turritopsis reverts to a sexually immature stage after reaching adulthood, and is capable of rejuvenating itself. 
The 4-5mm diameter creature, technically known as a hydrozoan, is the only known animal that is capable of reverting to its juvenile polyp state. Theoretically, this cycle can repeat indefinitely, rendering it immortal. 
Found in tropical waters, Turritopsis is believed to be spreading across the world. Though solitary, they are predatory creatures and evolve asexually. 
The switching of cell roles is usually seen only when parts of an organ regenerate. However, it appears to occur normally in the Turritopsis’ life cycle, scientists said.