From antiquity, longevity and immortality of living species and individuals has been a subject of research and study for many great scientists, thinkers, and philosophers. Science claims that the fundamental unit of life is the cell and that for any living organism to live as long as possible, it must work to maintain a healthy stasis for the cells that comprise it. This is the main reason why many modern researchers and scientists believe that the secret to longevity and possibly to immortality is hidden in nature, to be more specific, in other living organisms that appear to live unrealistically long. Trust us, these organisms are much older than your grandma, and so, on today’s list we will take a closer look at these 25 living fossils. https://twitter.com/list25 https://www.facebook.com/list25 http://list25.com/ Check out the text version as well! - http://list25.com/25-organisms-who-are-older-than-your-grandma/ Here's a preview of what awaits: Macaw Parrots Orca Whales Humans Sturgeons Tuatara Lobsters Tube Worms Sea Urchins Bowhead Whales Koi Fish Tortoises Freshwater Pearl Mussel Honey Fungus Old Tjikko Sponges Leiopathes Endoliths The Great Basin Bristlecone Pines Silphidae Beetles Silene Stenophylla Hydra Pando Trees Posidonia Oceanica The Immortal Jellyfish