Most vetigastropods are dioecious, although some deep-sea members of the group are hermaphrodites. Vetigastropods usually discharge their gametes directly into the sea for fertilization and development; thus there is no courtship or mating between individuals in the majority of species. Several vetigastropods have been shown to make escape responses in reaction to other predatory snails as well as sea stars. Escape responses include swaying and tilting the shell to avoid the sea star's tube feet, as well as short spurts of rapid movement away from potential predators after tissue contact.
Intertidal species are seldom active at low tide, to avoid physiological stress due to drying. Most subtidal and intertidal species are active at night when predators who rely on sight are less effective. Migratory movements of patellogas-tropods are limited to a general up shore pattern, from recruitment in the lower intertidal to life in higher intertidal
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