knotical:If you read this:
http://www.environmentdivision.info/features/queen_conch.pdf
youll find out how they use it.
I don't think the .pdf file describes the organ the poster refers to. I've seen guys dockside (either in Grenada or St. Vincent) with conch and pulling this same clear thing out of the conchs and slurping them down raw right on the spot.
Reminded me of clear spaghetti.