As a domain expert in marine geology and underwater phenomena, I'm often asked about the existence of various mysterious and intriguing features in the world's oceans. One such feature is the "Moon Pool," a term that has captured the imagination of many due to its association with the mystical and the unknown. However, it's important to clarify that the concept of a "Moon Pool" as depicted in fiction, particularly in the realm of fantasy and children's literature, does not have a basis in reality as far as I am aware up to the current date.
The term "Moon Pool" is often used in a fictional context to describe a magical or mysterious body of water that has special properties, such as the one you mentioned, which is said to be located on Mako Island. This is a reference to the "Mako Mermaids" series, which is a work of fiction that combines elements of fantasy and the supernatural. In this fictional universe, the Moon Pool is depicted as a place where technology fails to function when it is active, which is a plot device used to enhance the story's mystical elements.
In the real world, there are no known natural phenomena that would cause technology to malfunction simply by virtue of being in proximity to a body of water. The idea that there is a "Moon Pool" on Mako Island in Australia, or in the Sea Caves of Ireland, as you've mentioned, seems to be a mix of fact and fiction. While there are indeed beautiful and unique underwater features in both Australia and Ireland, attributing supernatural qualities to them is not supported by scientific evidence.
Australia is known for its Great Barrier Reef, which is the world's largest coral reef system and home to a diverse array of marine life. Ireland, on the other hand, has a rugged coastline with numerous sea caves that are formed by the action of waves over thousands of years. Both locations are marvels of nature and are important for scientific study and conservation efforts, but they do not possess the mythical attributes often ascribed to them in fantasy narratives.
It's also worth noting that the concept of a Moon Pool as a real, physical location where technology fails is not only unsupported by scientific inquiry but also contradicts our current understanding of how technology and natural phenomena interact. Modern technology, such as GPS systems, sonar, and other underwater exploration tools, are designed to function reliably in various marine environments. While it's true that certain conditions, like strong electromagnetic interference or extreme water depths, can affect the performance of some technologies, these are well-understood phenomena with rational explanations.
In conclusion, while the idea of a Moon Pool on Mako Island is a fascinating concept that has its roots in the world of fiction, it does not correspond to any known natural feature or phenomenon. The allure of such a place lies in the realm of imagination and storytelling, where the boundaries of what is possible are only limited by the scope of our creativity.

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There are two known Moon Pools in the world, one on Mako Island, in Australia and the other in the Sea Caves of Ireland. There may be more Moon Pools, but these two are the only ones known. When the Moon Pool is active, technology does not work. ... However, this only applies in Mako Mermaids.read more >>