Aria the Natural OVA
Akari, Aika and Alice are three girls who share a single dream: to become the most talented gondoliers in all of Neo-Venezia! Every day they train toward their goal, exploring all the wondrous sights that the water-covered planet Aqua has to offer. Whether it's spending a wild day at Carnevale, sharing a beautiful sunset, or even crossing paths with the mysterious spirits that dwell in Aqua's shadows, for these three friends, each day is a new adventure!
(Source: Right Stuf)