I tend to find that a lot of people can't even see a tuatara when it is sitting in plain view out in the open. It's really bizarre.
Must admit that most people pass over their exhibits over here after a few secs with scanning and mumbling something "..... asleep ..." or something!
That experience is however down to the very few collections (in Europe to this day it is just Berlin Zoo and Chester unfortunately) outside their home nation Aotearoa where the species is more or less kept at most conventional zoos (just to give the visiting public the notion how unique these lizards are in the world and not just New Zealand!