Caleb Finch’s (University of Southern California) review: Update on Slow Aging and Negligible Senescence – A Mini-Review, recently published in the journal Gerontology, explains the concept of negligible senescence he developed about 20 years ago. Since formulating this hypothesis he has been searching for organisms that display slow aging. In this review he discusses several long-lived species: turtles – Blanding’s turtle  (Emydoidea blandingii), painted turtle  (Chrysemys picta), the fish genus  Sebastes also called rockfish, the naked mole-rat  (Heterocephalus glaber), and human centarians (Homo sapiens).