What Animal Has The Shortest Lifespan. Greenland shark lives over 270 years. The tuatara is a reptile in new zealand which lives nowhere else it looks like a lizard though it is actually very different and is considered by many people to be a living fossil because its direct relatives lived in the time of the dinosaurs.
The sign eviota, eviota sigillata, a tiny coral reef fish, completes its entire life cycle within an eight week period. Mayfly has the shortest lifespan on earth — 24 hours or less. This species has the shortest lifespan of any vertebrate.
We often hear that mayflies, like the whiteflies of the susquehanna river, have the shortest lifespan of any animal on earth, just 24 hours for many species.
This species has the shortest lifespan of any vertebrate. For the longest natural (not assuming genetic modification) lifespan, it depends on whether their ideal conditions are met in regards to food and security. This puts the age range of the shark tested at. Hamsters have such a short lifespan because they tend to reach their “full” maturity much quicker than most other animals.