The extreme detour of the recurrent laryngeal nerves, about 4.6 metres (15 ft) in the case of giraffes,[32]: 74–75  has been cited as evidence of evolution, as the nerve’s route would have been direct in the fish-like ancestors of modern tetrapods, traveling from the brain, past the heart, to the gills (as it does in modern fish).

https://en.wikipedia.org/wiki/Recurrent_laryngeal_nerve