I was making sad kitty noises when this didn't show up on the second, but I am a happy kitty now. ^_^
I can almost imagine Aerith as some sort of angelfish in build, or like a leafy sea dragon, with all the pretty floating tendrils... ♥ And yeah, she'd adapt to shape-changing right quick, I think.
But mmm...mer-orca!Cloud. I may have to see if I can find a friend with artistic talent and bribe them into drawing that for me. Because I have to see that. ...and yeah, I can imagine that Cloud would be a bit leery about bringing the presence of a predator into the midst of Atlantica. At least he isn't a shark or something, though. *grin*