The age of a whale shark can be determined by dating the rings of growth in their cartilage, a method that has confirmed that these animals can live for at least 50 years
Global Whale Shark Research & Conservation Program — Marine
Cold War nuclear test residue offers a clue to whale sharks' ages
Sudden shark die-off 19 million years ago eliminated most species
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A drop of blood could reveal how old wild elephants are
Five Incredible Whale Shark Discoveries of the Last Decade