Well there is one at Svalgurok and the other is at the construction of the locker/changing rooms extension I mentioned.Anyone happen to know what that tower crane is for? It seems to be in the wrong place to be for Svalgurok.
While not yet confirmed when it will be added to Rulantica thought I'll post about it here anyway. VR Coaster/Mack NeXT have been for a while developing SwimVR as seen in at 2:55 in this Rulantica Weekly episode.
A teaser for the future in park VR attraction exists in the Rulantica preview center under Foodloop - seemingly it will be called "Snorri Snorkeling".