A 2009 study conducted by the Mote Marine Laboratory in Sarasota, Florida, used radiocarbon dating on the vertebrae of deceased whale sharks to estimate their age. The study found that one of the whale sharks had a minimum lifespan of 50 years, while another was estimated to be at least 100 years old.
However, it's important to note that these estimates are based on a limited number of samples, and our understanding of whale shark lifespan could change as more research is conducted. Given their slow growth rate and longevity, it is likely that whale sharks are vulnerable to overfishing and other human activities, making it essential to protect these majestic creatures and ensure their long-term survival.