It's true. Galápagos expeditions.
There were many turtles in the Galápagos, each subspecies unique to one of the islands. As they could live on ships well enough and back then, there was nothing so grand as a spot of fresh meat while at sea, Darwin and associates ate the couple of dozen turtles they took from the islands while en route to Polynesia.
Lots of people ate Galápagos' giant turtles. Apparently they were too delicious for their own good and, thus, quickly went the way of the dodo.
So basically, Darwin not only peddled the theory of evolution, but also directly played a big hand in the extinction of at least one species.
This was also the first thing I thought of when I saw the sentence 'Jeg spiser ikke skilpadder'. (Well... that and it's turtles all the way down.)