[ Excited, and knowing Camilla will basically roll with her enthusiasm, Zelda nods, but then taking the Sheikah slate from her belt, makes to get a picture or three of the herd of Shellos moving around here. They look as blank faced as any pokemon, so it must be some sort of instinct...? ]

I am, yes! And I would normally agree, but as you can see, some of them are actually progressing back to the water as opposed to out. I believe that they must make their homes both in the city and the water, somehow.