A specimen of the Epibenthic Sponge (Cinachyra antarctica) has been found to be over 1,550 years old.
The Ocean Quahog (Arctica islandica) is a North Atlantic mollusk which is known to live for more than 400 years. One specimen as estimated to be around 410 years old after it was killed and dissected.
Some of the Black and Gold Coral colonies (colonial organisms) off the coasts of Hawaii are estimated to be as old as 4000 years!
'Jonathon' a tortoise (Dipsochelys hololissa) which originated from the Seychelles who now lives on St Helena Island in the South Atlantic is believed to be in the region of 178 years old. He was photographed in 1900 and estimated to be about 70 years old at the time and so there is little doubt that he is a very old animal. The oldest known tortoise reached 189 years of age so if he is lucky 'Jonathon' has a few years to go yet.