Achievement Thread - Guide on how to achieve them

I haven't found a bottle in a cave, but I've gotten them all the other ways listed. I'm not certain land bottles counted for the badge, since they aren't counted on the scuba skill, but I've got 20 land and 27 underwater with no badge , so . . . But @Lexers615 has clearly done the serious study, so I think if he hasn't popped the achievement I'm not going to.

But if I do I'll be sure to post it! :D