7 of the Oldest Animals on Earth

(via Mental Floss) Figuring out which animals are longest-lived is tricky, because some game the system. Immortal jellyfish, for example, clone themselves in their juvenile polyp stage, a phase to which they can return later in life. It’s a jaw-dropping feat—but is it the same jellyfish or a newborn copy? Taking such outliers into consideration, here are the animals that will probably get the most free birthday scoops from Baskin-Robbins in their super-long lifetimes.