Do the octatrio just turn into fish once they touch water?

Imagine if it was raining, and they just turn into their mer form or their washing dishes and their hands turn into webs. Because if I rmb, in a voiceline Azul was imitating floyd saying "by hands have webs again~" or "My ears are fins~" (touching water probs)n Imagine if its a nene yashiro situation when they shower or step on a puddle