100 million-year-old sea microbes below the seafloor are still alive and thriving! According to a new study, published in the journal Nature Communications, these marine microbes exist in the oxygen-filled sediment of the South Pacific Gyre located in the South Pacific Ocean. These micro-organisms account for approximately 98% of the total mass of organisms living in the ocean. Not much was know about these organisms and how they manage to survive in a region which scarce food sources. When brought back to the lab and fed, they began to multiply. This new study makes us believe that microbial life is very persistent and find a way to survive, say researchers.