Far From Home
An issue many with thalassophobia struggle with is being far from land. It is the distance that seems to be the biggest problem. It could be that they feel trapped on a ship now that land is further away than it used to be. The further out into the deep blue it gets, the worse symptoms might get. Anxiety can be difficult to deal with, as well as stress. People on cruises deal with this so often that staff offers medication or patches to help calm people down.