themagni
Contributor
I have used Reef sticks as required in some sites but find that concept interesting. Don't touch anything but it is OK to jam a metal rod into the bottom or on a rock, coral etc I personally think steadying yourself with a well placed finger is less invasive.
It's probably not for us per se, it's for the people who were "just steadying myself and a piece broke off, I put it in my pocket just so I could ask what to do with it, but then I forgot, so I took it home".