Top Ten Longest-Living Animals on Earth

The top two creatures in this list are potentially immortal, as long as they don't get eaten or injured of course.

1. Hydra: potentially immortal

2. Turritopsis Dohrnii: potentially immortal

3. Glass Sponge: 10,000+ years

4. Black Coral: 4,000+ years

5. Ocean Quahog Clam: 500+ years

6. Tubeworm: 300+ years

7. Greenland Shark: 272+ years

8. Freshwater Pearl Mussel: 250+ years

9. Rougheye Rockfish: 200+ years

10. Bowhead Whale: 200+ years

Source: LiveScience.com