Dive t-shirts are a fashion
faux-pas, as are retro-rock-concert t-shirts, visors that say,
Waiohai Beach Club, and polo shirts that say
Phi Gamma Delta Annual Pig Roast 1989. Unless you are younger than 24, in which case they are still in bad taste, but nobody expects anything else from you. If you are younger than 24, female, and blessed with a svelte figure, then they are not only acceptable, but fashionable, and perhaps even trend-setting.
Aggressor used to sell t-shirts that I liked. The one from Palau had a crudely drawn shark beneath
Palau in a pale shade of pink. Nothing else. I wore mine until it disintegrated in the laundry. Ditto the one from Truk, similarly designed in a pale green. I wore mine exclusively to the gym. If you insist on wearing them, wear them just about anywhere rather a dive boat, where you will instantly be recognized for the dork that you are.
I now have only one dive t-shirt. It says
Undersea Hunter, and then, beneath that,
crew. I like the crew designation--it adds a dollop of fraud to ratchet up the dork factor. My fiancee has one from Apo Reef in a pale green that I bought to appease a persistent vendor there. I am surprised she actually wears it.