neritid gastropod

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Noun1.neritid gastropod - operculate seasnail of coastal waters with a short spiral shell
seasnail - any of several creeping marine gastropods with a spirally coiled shell: whelks; tritons; moon shells; neritids
nerita - a neritid gastropod having a short smooth or spirally ridged shell with thick usually toothed outer lip and toothed operculum
bleeding tooth, Nerita peloronta - gastropod having reddish toothlike projections around the shell opening; of the Caribbean area
neritina - ornately marked and brightly colored snails of brackish waters