Sometimes we may notice tiny pockets of air building up in the area where the sand touches the glass. Occasionally you'll see worms, or pods, or just an empty tiny cavern to peer at, but this time I saw something different. This is a typical view, captured with my iPhone:
Several years ago, I got a coral from the LFS that I thought was a green slimer. Turns out, it was a Lime In The Sky, so I call it a Limer. It grew from a 1.5" frag into a decent colony about 12" tall over the years, despite what the Shadowcaster tried to do to it.