California's black abalone, once abundant along the coast, faced catastrophic decline due to withering syndrome, which wiped out 99% of the population by the mid-1980s. Recent research published in the journal Proceedings of the National Academy of Sciences reveals that modern black abalone retain more genetic diversity than previously thought, based on DNA sequenced from ancient shells up to 1,500 years old. Surprisingly, the study found that genetic diversity and population structure in modern and historical populations are remarkably similar, suggesting that the survivors have maintained much of their genetic variation despite the near-extinction event. Additionally, immune-related genes in the survivors show signs of recent natural selection, indicating potential disease resistance. These findings provide a hopeful outlook for conservation efforts, particularly as wildlife officials work to restore black abalone populations along the California coast. However, researchers caution against translocating abalone across Point Conception due to identified genetic differences in that region. Overall, the study highlights resilience in a species that has faced one of the most severe population declines on the U.S. West Coast.