Sea Turtles Aged Using Carbon From Nuclear Bomb Tests

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Hawksbill turtles are found throughout the world in tropical waters, but are now rare around Hawaii due to over hunting. abcphotography/Shutterstock

Determining the age of sea turtles is notoriously difficult. The size of the creatures cannot be used as a measure, and the lack of teeth rules out another potential marker. Estimates vary on the age the marine reptiles can reach, with many experts suspecting that they can probably get to around 100 years old.