Feeding ecology and diet

Most vetigastropods feed on such encrusting invertebrate organisms as sponges, bryozoans, and tunicates. Feeding directly on such plant material as algae and marine angiosperms has evolved in several groups, most notably the Haliotoidea and Trochoidea. Deep-sea vetigastropods typically ingest sediment; those associated with exotic substrates likely feed on microbes that are actively decomposing the substrate. Filter feeding has evolved in several vetigastropod species, including Umbonium in the Trochoidea.

Predators of vetigastropods include other predatory gastropods, sea stars, fishes, small mammals, and shore birds. Such shore birds as oystercatchers are especially voracious predators.

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