4. Clams – over 400 years
Thanks to their slow cell replacement process clams can live up to and over 400 years!
5. Glass Sponges – 15,000+ years
Do sponges really count as animals? Yes they are, and yes they do seem to live a long life. And guess what, some of these creatures have seen the pyramids being built over 15,000 years ago, and may even see the end of humanity. All hail the Glass Sponge!
6. Hydra – Immortal
Scientists claim that Hydras just don’t age. They’re truly the perfect organisms, able to divide their cells forever… or until someone eats them.