Nature
Some living whales still carry harpoon tips from the 1800s
Bowhead whales caught by Alaskan hunters have been found with fragments of explosive harpoon heads embedded in their blubber, a design that fell out of use around 1880 - meaning the whale had survived a hunt over a century earlier. Separate chemical ageing of eye tissue puts some individuals at 150 to over 200 years old, making bowheads the longest-lived mammal known.