To look at a Tuatara is to look directly into the Mesozoic era. Sphenodon punctatus belongs to a lineage that diverged from snakes and lizards before the first dinosaur grew large. They are the ultimate living fossils. They survived the asteroid that wiped out the T-Rex. Only to nearly meet their end at the hands of the Polynesian rat and European settlers. They are built for a world that no longer exists. A slow, cool, and patient version of Earth. They possess a unique skeletal structure. Two rows of teeth in the upper jaw overlap a single row in the lower jaw. This creates a sawing action that can easily shear through the chitinous armour of a giant weta or the skull of a small seabird. The Tuatara is the master of the long game. Their metabolism is so incredibly slow that they breathe only about once an hour when resting. They can live for well over a century. They do not even reach sexual maturity until they are roughly twenty years old. Females only lay eggs once every two to five years. This glacial pace of life is perfectly suited to the New Zealand climate. Unlike most reptiles that require blistering heat to function, Tuatara are most active in temperatures as low as 12°C. They are famously odd roommates. They often share their burrows with nesting petrels or shearwaters. In this bizarre arrangement, the seabird provides the burrow and the guano. The guano attracts the insects the Tuatara eats. The Tuatara provides security. Though they are not above occasionally eating the bird's eggs or chicks as a convenience fee. One of their most legendary features is the third eye or parietal eye. Visible only in hatchlings before being covered by scales, this eye comes complete with a lens, retina, and nerve endings. While it does not see images in the traditional sense, it is a sophisticated solar sensor. It helps the Tuatara regulate its circadian rhythms and thermoregulation. It is a biological compass that has guided them through 200 million years of planetary shifts. However, their ancient biology has a modern weakness. Temperature-dependent sex determination means if the nest temperature rises even a few degrees due to climate change, all the hatchlings become male. Potentially dooming a population to a slow, lonely extinction. Conservation today for the Tuatara is a feat of island-hopping and predator eradication. Thanks to the work of the Department of Conservation and iwi partners, they have been successfully reintroduced to the mainland in fenced sanctuaries. Allowing New Zealanders to once again walk the same ground as a prehistoric titan. They are not just animals. They are a biological miracle. To see a Tuatara sitting motionless in the moonlight is to realise that some things do not need to change to be perfect. They have seen the mountains rise, the forests change, and the dinosaurs fall. They are the patient kings of New Zealand. And they are in no hurry to leave.