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High Quality Content by WIKIPEDIA articles! A veliger is the planktonic larva of many kinds of marine and fresh-water gastropod molluscs, as most bivalves (including genus Dreissena).The veliger is the characteristic larva of the gastropod, bivalve and scaphopod taxonomic classes that is produced following either the embryonic or trochophore larval stage of development. This stage in the life history of these groups is a free living, planktonic organism that potentially enhances dispersal to new regions far removed from the adult mollusks that produced the larvae. The general structure of the veliger includes a shell that surrounds the visceral organs of the larva (e.g., digestive tract, much of the nervous system, excretory organs) and a ciliated velum that extends beyond the shell as a single or multi-lobed structure that is used for both swimming and particulate food collection.
0.23 x 0.16 x 0.013 m; 0.34 kg