Video answer: Ffxiv: underwater swimming
Top best answers to the question «How to go underwater in ffxiv»
If you are playing on console, it's O or B, for PlayStation 4 and Xbox One respectively. Simply tap the button to automatically go underwater and you can begin exploring. Certain mounts can also be used underwater for vastly faster travel speeds. If you are playing on PC, it's CTRL+Space.
Video answer: Ffxiv under the sea msq objective location