Florian Wellbrock summed it up succinctly after his 14:36.25 German 1500m freestyle title and golden ticket to World titles in July:

Distance swimming is putting Germany a little bit back on the world swimming map. That was three of us that swam inside the [Singapore cut] and it's astonishing that Oliver didn't make it with a 14:39. That's something you don't see anywhere else in the world.

Indeed you don't - not domestically - and never worldwide in a calendar year in the same race or multiple races in domestic waters, let alone a single training unit in one city in one country.

Here are the phenomenal stats...