- Arctica (A. islandica): ocean quahog clam, 500+ years
- Somniosus (S. microcephalus): Greenland shark, 270 to 400+ years
- Balaena (B. mysticetus): bowhead whale, 200+ years
- Sebastes (S. aleutianus): rougheye rockfish, 200+ years
- Leiopathes (L. glaberrima): black coral, 4,000+ years
- Monorhaphis (M. chuni): glass sponge, roughly 11,000 years
- Homarus (H. americanus, H. gammarus): lobsters
- Mesocentrotus (M. franciscanus): red sea urchin, formerly classified under Strongylocentrotus
- Aldabrachelys (A. gigantea) and Chelonoidis (Galápagos tortoises): 150+ years
- Sphenodon (S. punctatus): tuatara, 100+ years
- Heterocephalus (H. glaber): naked mole-rat, 30+ years with flat mortality risk
- Proteus (P. anguinus): olm, up to about 100 years
- Actinia: some sea anemones, with specimens living 80+ years in captivity
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IMMORTALITY