Nerita senegalensis
Nerita senegalensis is a species of sea snail, a marine gastropod mollusk in the family Neritidae. Description. The length of the shell attains 13 mm. Nerita senegalensis is a marine gastropod that appears to have a preference for specific levels of the shore. According to some laboratory and field experiments, displaced snails exhibit a general 'homing' behavior when displaced down-shore or up shore. However, cues involved in this migrational behavior have yet to be identified. Distribution. This marine species occurs off Gabon and Senegal.