Surprisingly, Calio come into contact with water without being harmed as long as it's nothing more than a drizzle (for magen-related reasons involving surface tension and whatnot). This means he can take showers, especially hot ones. Unfortunately he didn't catch wind that something's gone wrong with the water supply, and it led to him transforming mid-shower.

A little TF suggestion I drew, courtesy of Aveture from Furaffinity. They wanted me to draw one of my OCs turning into one of the sea monsters from Luca, and I figured why the hell not. It was interesting to TF Calio into an aquatic creature though.

Art and Calio Fuelor by iWTBAT