This is gonna sound silly but either a Journalist or something in Marine Rehabilitation/rescue. 1st one is because any job that would involve him going to a variety of different places simply to learn and meet different people is something he already actively persues as a WoL. Thats his favorite part about his ffxiv job is just...learning about how vast the world and its people are! Second one is because I can easily see him just sticking to his ocean roots and doing his best to care for marine animals and sea life in general!!! Fish boy