A specific Aquatic Yukkuri that uses her witch hat as a boat to navigate the surface of water. Despite the aquatic trait applied to them, Aquatic Marisas will commonly maintain their fatal weakness to water, prompting them to finish what they need to do quickly.
Certain questions were raised whether or not such marisas should really be considered aquatic since they die quickly if they fell to water. Even with their hats, these so-called "aquatic marisas" have very limited mobility on water and often drown with slightest distraction or error.
While some humans pick aquatic marisas as pets, such creatures require even more care compared to other pet yukkuris because of the reasons mentioned above. In some cases, aquatic marisas even develop "land-sickness", making them uneasy on land.
Life expectancy of aquatic marisas are considered even lower compared to the other common yukkuris.