This might sound dumb but I’m wondering if it’s actually realistic to see a black sand coral reef in the wild. I’m asking this because my next reef tank is gonna be a Hawaiian biotope but I wanted to use black sand. Does anyone know if black sand can even be found around reefs? I gotta find out or else my OCD will kill me. Also I wasn’t sure what forum to put this in so if this is the wrong one sorry about that. Thanks guys