A swimming pool is a big pool of liquid in which people swim. They come in many shapes and sizes, and occasionally are filled with non-conventional liquids – just like the swimming pools themselves.
All swimming pools are fun places to go, unless you have a phobia of swimming pools, or can’t swim, or have traumatic memories of the time a swimming pool touched you in a non-conventional place.
But regardless of how fun it can be, a swimming pool is just a poor person’s ocean. It doesn’t have tides. It doesn’t have beaches. It usually doesn’t have waves to play in, or interesting weather phenomena like waterspouts or sea-fog. It’s filled with far less interesting wildlife, and is a terrible as a trade-route. On top of all that, it’s only about half the size – which means the urine concentration is twice as high.