Underwater Fountains of St. Petersburg

Just a few days ago the authorities of St. Petersburg city has launched the set of new fountains in the city. These ones remarkable though. Now they placed the main part of the fountain underwater, not underground, under the waters of Neva river of St. Petersburg.
Now from many points in the city people can see the new fountains, illuminated in the evening, which make different unpredictable structures with the water.