Periwinkles and coffeebean snails are the only gastropods presently known to serve as sinks for the fungal mass in the smooth-cordgrass shoot-decay system. But there are other saltmarsh gastropods that may well be important grazers of decayed cordgrass-shoot material. These are saltmarsh hydrobiids, collected from the surface sediments of the marsh. The black line at the top is 5 mm long, so you can see that these are tiny snails. They may be among the micro-animals, in conjunction with sediment bacteria and protozoa, that make use of particles that fall away from the shoot-decay system (and the fecal pellets that shoot-shredders drop). Particles of decayed shoot would contain some living and some dead fungal mass, along with lignocellulolytic fungal enzymes that could be captured. See Newell, 1996, J Exp Mar Biol Ecol 200:187-206, and Newell & Porter, 2000, pp. 159-185,in Weinstein & Kreeger, Concepts and Controversies in Tidal Marsh Ecology, Kluwer.