I have absolutely no idea how to go about this. I read both scrolls in his hut and even hunted around with my magnifying glass, but whenever I go to either search QueenRuby's globe or the trenches in the reef, I get nothing. I don't know what else to do at this point.
Once you click QueenRuby's globe, move on to searching the trenches, even if the globe gives you the message "What were you expecting, a secret compartment?" - the globe isn't supposed to give you any real clues. If you're still not finding anything, there could be a trench that you've missed, so I'd recommend that you try looking for more of those. (: