This is Nemo, one helluva' diving pool in Brussels, Belgium. The pool has multiple flat-bottom levels. The first is at 16 feet, the next at 32 feet. The bottom of the pool funnels into a large circular pit that bottoms out around 110 feet. If your sport, you can take a detour into the diving caves. Perhaps the best part is the water is kept at a sublime 86 degrees at all times.