What significant feature does the world's longest swimming pool utilize?

The world's longest swimming pool utilizes ocean water recirculation, which is a significant feature because it allows the pool to be filled with seawater, creating a unique swimming experience. This method helps maintain a more natural feel for swimmers, as it mimics the conditions of the ocean while incorporating advanced filtration systems to keep the water clean and safe for use. This approach is not only environmentally friendly but can also enhance the overall aesthetics and experience of the pool.

In this context, using ocean water also provides benefits like lower reliance on freshwater sources, which is increasingly important given global concerns about water conservation. The structure and design of the pool leverage this system to ensure that swimmers enjoy a sustainable swimming environment while still having access to all the advantages that a large pool offers.