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Reproductive Data for Terebra affinis
egg diameter -
reproductive season June, July and August
development veligers hatch when 1 1/4 whorls are complete, add 3 more whorls while planktonic, settle out when they are 1.0-1.1 mm in length and have completed 4 1/4 to 4 3/4 whorls
occurrence plankton in Kaneohe Bay Sampan Channel
references J.B. Taylor in Planktonic Prosobranch Veligers of Kaneohe Bay, 1975

Phylogenetic Information
phylum Mollusca
class Gastropoda (subclass Prosobranchia)
order Neogastropoda
family Terebridae
genus Terebra
species affinis
reproduction method sexual