I made a new world and there were water skyscrapers in the ocean and in some ponds.
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Seed, coordinates and custom world preset ?
Seed:1556503292181225086
Custom world: Default
Coordinates: X: 198.54 Y: 91.73 Z: -73.103
The water skyscrapers can be seen at spawn if you move around a little bit. They are hard to miss.

Cannot confirm.
Please attach screenshots.