It is somewhat sad that a huge amount of aquatic animals can easily outlive humans. Even something as unassuming as a sea urchin can live over a hundred years with some species even living over 200. Some animals can even just reverse aging such as the immortal jellyfish. They basically have the ability to turn back into their younger forms.
You haven't eaten in a while? Well, why don't you just rewind your body. You're injured? Nothing a simple rewind won't fix.