George the Lobster – 140 Years Old
This guy was just living in a tank as the mascot of the City Crab and Seafood restaurant in NYC, when he was discovered by PETA. They petitioned to have him released back in the wild, due to his huge size and apparent age, and it was granted. While Lobster dating and aging is highly controversial (essentially, they keep growing, reproducing and molting until they’re caught or eaten by a predator, so they assume a Lobster is old because it’s huge), it’s assumed that George is the oldest Lobster caught thus far.