Do most individuals die young or live to ripe old ages? Survivorship curves visually answer these demographic questions. Imagine a population of 1,000 individuals born at the same time in the same ...

Using these photos, we developed what scientists call “survivorship curves” by estimating the probability whales would disappear from the photographic record as they aged. From these ...

If nothing is done, extinction is a very real possibility. Researchers reveal troubling findings about whale lifespans: ...