The checkered nerite, Nerita tessellata, is a common intertidal gastropod in southeast Florida. The snail is named for the black and white checkered pattern on the shell, which covers a series of coarse irregular spiral ridges on 4-5 whorls (Andrews 1994, Abbott & Morris 1995, Bovbjerg 1984). The calcareous operculum is black, closing around an aperture which displays numerous small teeth on the interior of the inner and outer lips (Abbott & Morris 1995). Members of this family (Neritidae) are also characterized by a small, pointed hook at the end of the operculum (Abbott & Morris 1995).
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