Whether they’re tucked away in a suburban backyard, set amidst lush gardens or suspended high in the air, sdy pools offer the perfect blend of relaxation and exhilaration. But how do they work? And why are they so popular? Sydney Pool + Outdoor Design’s Gemma Thomas explains all.

The sdy, or sea-discharge, pool is a natural-looking swimming area that is formed by an overflow of tidal waves, creating a safe and shallow area for swimmers at low tide. They are popular among surf lifeguards because they can provide a safe swimming environment during rough conditions, as well as providing easy access for people with disabilities.

In addition, the sdy pools are an important part of the local ecosystem by providing a habitat for a variety of marine species. They also reduce erosion and provide shelter for the tidal flow of water, which is beneficial to nearby coral reefs and coastal plants.

Ocean pools are dotted all over Australia’s coastline, and there are more than 100 of them in New South Wales alone. They are a unique feature of our beaches, often carved into rocky headlands or coves, offering swimmers an alternative to the open ocean and acting as a refuge from large waves and strong currents. Some are fenced and maintained by private clubs, but many are free to use. The iconic Bondi Icebergs Pool at the southern end of Bondi Beach is one of the most popular.

These historic structures are facing a number of challenges, including climate change. Rising sea levels are eroding their walls, and many may need to be raised in order to remain at the same height. In addition, the pools were built using old-fashioned techniques, and some are more fragile than modern sea structures.

Fortunately, the sdy pools are receiving some attention from local governments, which are looking for ways to save them. For example, Lane Cove Council is considering a discounted pricing model for pool entry, following a successful trial in far-south NSW. The move would not only help the sdys to stay open but also improve financial success.

Other sdys are receiving less support, however. In Coogee, you can visit Wylie’s Baths, which was established in 1907 by champion long-distance swimmer Henry Alexander Wylie. The picturesque tidal pool is a beautiful place to swim, with its rock platforms and sweeping views of Wedding Cake Island. Also in Coogee, the McIver’s Ladies Baths are a great place for families to enjoy the outdoors.