Yes it sounds gross to talk about throwing up and it is best not to discuss about it when you are going through some windy weather in a small boat for diving. Believe me it does make you throw up at the end. It was the day I was going for my dive in Great Barrier Reef and it was a 2.5 hours journey to get there by boat. I started talking to this American guy who was afraid of getting sick and in process of telling him various ways not to get sick I myself started feeling sick. Eventually I went to the front of the boat to look at the horizon (well known technique to stop you from throwing up). And soon there was almost a bunch of people who joined me and here is a picture that I took as it was the first time I found so many people all getting sick at the same time. And the people inside the boat were not in the great shape either almost half of the people were holding a bag to make sure they don’t get throw up inside the boat after listening to the embarrassing stories told by the guide in the boat. Anyways I guess getting sick is part of travel as well. There are few things that you can do as a precaution not to get sick but if you do then just better to throw up and move on to enjoy your holiday/trip and not to screw rest of it if possible.