Sometimes they do, at cracks, cold joints and around penetrations, but far less often than through the plumbing and fittings. A visible crack is not necessarily leaking; dye drawn into the crack with the pump off confirms that it is. Plaster crazing, a network of fine surface cracks, is cosmetic and rarely lets water through.
Coastal soil shifts, so a leaking structural crack should be confirmed before it is patched. A patch over a crack that is still moving will not last.
Still not sure it’s a leak?
Describe what your pool is doing, and we will tell you what it may be and what a visit would involve. If the water level is dropping fast, call us right away.