It took 300 years for the giant tortoise to get a scientific or taxonomical name because people kept eating them. People would put them on ships and sail them back home, but by the time they arrived at port in Europe the crew would have eaten the whole lot. Even Charles Darwin and the crew aboard the Beagle ate all the giant tortoises on board. The only descriptions of them are comparing them to chicken, beef, mutton and butter, and saying they tasted better than all of them. Even the liver and bone marrow was considered delicious. They were also used as water stores, because they have a special internal bladder which stores water so perfectly that it is drinkable, so when you slit them open to cook them you also got a gallon of fresh water. The crew therefore stacked them up so that they could not move, and they did not need to be fed for months so they were very useful for whaling ships because they provided both food and water. There are 12 species of giant tortoise, all of which are now endangered.