Some creatures already live eternal life

Turritopsis nutricula is a small jellyfish. This is the one of the known reported organisms that can revert its life cycle to the polyp stage even after becoming sexually mature, defining itself as the only immortal organism in the animal kingdom. Therefore, the animal is having prime importance in basic biological, aging, and biomedical researches.

The American lobster, Homarus americanus, is a species of lobster found on the Atlantic coast of North America, chiefly from Labrador to New Jersey. It is also known as true lobster, northern lobster, or Maine lobster. This crustacean can live up to 140 years

A HeLa cell also Hela or hela cell, is a cell type in an immortal cell line used in scientific research. It is the oldest and most commonly used human cell line. The line was derived from cervical cancer cells taken on February 8, 1951, from Henrietta Lacks, a patient who eventually died of her cancer on October 4, 1951. The cell line was found to be remarkably durable and prolific - which has led to its contamination of many other cell lines used in research

Hydra is a genus of small, simple, fresh-water animals that possess radial symmetry. Hydra are predatory animals belonging to the phylum Cnidaria and the class Hydrozoa. They can be found in most unpolluted fresh-water ponds, lakes, and streams in the temperate and tropical regions and can be found by gently sweeping a collecting net through weedy areas. They are multicellular organisms which are usually a few millimetres long and are best studied with amicroscope. Biologists are especially interested in Hydra because of their regenerative ability; they appear not to age or die of old age

Some coral species in the Pacific Ocean can live for over 4,000 years. Such long-living species of corals can be found in the waters off the Hawaii, at a depth from 300 to 500 meters

Ming (c. 1499 - 2006) was a nickname given to a specimen of the ocean quahog clam (Arctica islandica, family Veneridae), that was dredged off the coast of Icelandin 2006 and whose age was calculated by counting annual growth lines in the shell. Ming was the oldest individual (non-colonial) animal ever discovered whose age could be accurately determined. Originally thought to be 405 years old, Ming was later determined to be 507 years old

A bristlecone pine can refer to one of three species of pine trees (family Pinaceae, genus Pinus, subsection Balfourianae). All three species are long-lived and highly resilient to harsh weather and bad soils. One of the three species, Pinus longaeva, is the longest-lived life form on Earth; the oldest individual is more than 5,000 years old, making it the oldest known individual of any species