Fantasy World Underwater Assets

With Fantasy World 2.0 we got some lovely new stamp additions, and POIs like the Sunken City and beautiful Shipwrecks. However, there are no Vegetation or Coral Rock formations that could help build an Underwater Area on a World map. An underwater asset pack would enrich the current collection and open more possibilities for Worldbuilding. Not just for underwater areas, but for example areas which used to be underwater and have ascended above, or other creative biomes one can envision.