According to the Ministry of the mining industry in New Zealand, which is responsible, among other things, for the safety of the environment in this country does not have any land snake. The authorities want to keep things this way, so the snake outlawed.
Illegal is considered not only the content, or breeding ground snakes, even if you just saw the snake and did not report it to the authorities, you face a fine. No snakes in zoos or in research laboratories. However, off the coast of New Zealand's usual for at least two species of sea snakes, but they are not considered as spend their entire lives in the water.
Also New Zealand snakes are found in Greenland, Antarctica and some of the Hawaiian Islands.