Snakes are the most versatile species, with over 3,000 species, and are found on almost all continents and almost in all kinds of environments from deserts to rainforests.
They can thrive in most climates and various habitats. According to the reports, there are many parts of Earth that exhibit a remarkable absence of snakes, and this can be attributed to various factors such as geographic isolation, extreme climatic conditions, or adverse environmental conditions that make survival hard for them.
The regions themselves are an exception to the rule since the conditions here cannot favor the existence of snakes.
Some such areas include Antarctica, New Zealand, Ireland, and most of the Pacific islands. In many of these regions, strong laws and the natural barriers in place have resulted in snakes never establishing themselves to begin with; thus, one finds unique ecosystems in danger of introduction of non-native species otherwise.
Antarctica is the only continent that is snake-free on Earth as per reports. This is because the continent has an extremely cold climate. Thus, Antarctica is inadmissible for the snaky reptiles that are cold-blooded. Snakes are ectothermic, meaning that they regulate their body temperature through external sources of heat. Snakes could not survive in Antarctica since the environment has ice and snow, and the extreme coldness is such that reptiles would not be able to find warmth for them to work.
Antarctica does have other wildlife including seals, penguins, and marine mammals. However, this list does not include reptiles, which snakes belong to.
New Zealand is one of the very few countries in the world that is entirely snake-free, which is because it is relatively isolated in the South Pacific. Geographically, New Zealand is separated by huge oceans, and isolation did not allow snakes to naturally migrate to the island nation. Although sea snakes, including the Yellow Lipped Sea Krait and Yellow-Bellied Sea Snake, can occasionally be seen in the waters around New Zealand, they do not live on land.
Ireland is also one country that has no snakes, and fossil records show that snakes never colonized the island. Snakes are absent in Ireland because of its chilling climate and historical geographical separation from the main lands on the continent according to the reports. Snakes in their nature need warmer climates to conserve their body temperatures because Ireland has a temperate climate that is not healthy for snakes to survive. Snakes are not native to Ireland; however, some species exist in zoos or kept as pets but don’t occur naturally.
Greenland is an Arctic country with no native snakes. Because it’s not favorable due to its unfriendly climate, long winters, and little sunshine that the snake species don’t find friendly because snakes are cold-blooded animals surviving well in warm conditions. Even though there is no snake species known to be originally found in the country of Greenland, people are permitted to keep domesticated snakes under local authority permissions.
This has resulted in stringent laws on importing and even owning the exotic pets to conserve the sensitive ecosystem of the Arctic and not have the alien species disturb the fragility of the ecosystem in that area.
Alaska, being very much north, lacks native snake populations. The winters are long, and the light is scarce here, making the survival of the cold-blooded animals like snakes extremely difficult. There have been instances of nonnative snakes, but they are a result of escapes from pets in some cases; they are never established populations. Snakes cannot be seen throughout the year in this harsh environment, and the only reptile species in Alaska is the sea turtle, which lives in warmer ocean waters. There are no snakes in Alaska because the state has a cold climate and there is no place there where snakes might live.
Cape Verde is an island country off the west coast of Africa. It has no native species of snakes in its islands and is one of the few regions without snakes. Apart from having no snakes, Cape Verde has few venomous animals, making it a relatively safe destination for travelers. It has become a favorite tourist destination for people who want to have a snake-free holiday because of its lack of snakes and other dangerous wildlife.
Apart from the Cook Islands and Cape Verde, there are many other Pacific Islands, including Tuvalu, Nauru, Kiribati, and the Marshall Islands, which are snake-free. This is because the islands have isolated ecosystems that have never been colonized by snakes. Though some of the islands have sea snakes in their surrounding waters, they do not have any native land snakes on them. Geographically, the regions are cut off, so snakes cannot naturally migrate there.
