I have a shot of the other side if needed.
Sand Collar still soft found near the water's edge at low tide.
Essentially impossible to find the native horn snail, Cerithidea californica in the slough. The red-tipped snail participated in a marked-recapture study.
The invasion of this species shows many of the classic characteristics of exotic species take overs. Read more here: http://www.elkhornslough.org/research/grf_jeb.htm
The Neotaenioglossa is an taxonomic name for a large group of mostly sea snails. The name was originally created by Haller in 1882. Ponder and Warén (1988), and Marquet (1997), assigned this name to the superorder Caenogastropoda. ITIS considers the order Neotaenioglossa to be a synonym of Cerithioidea Férussac, 1819 .