[Mr.Lizard]

Update: all still well- the cherrystone has also buried itself. The water looks a lot cleaner/clearer, and there is less detritus visible and in the sand due to them/their digging. The littlenecks move around and rebury themselves with just enough of their shell sticking out to alow them to siphon. No fish problems, or the big ugly black crab, or snails, or the condylactis!