Hermaphrodite; has an extensible penis that fertilizes neighboring individuals. Eggs are fertilized in the mantle cavity; gravid individuals each contain 6,000-13,000 nauplii in mantle cavity. After some stages as a nauplius, a cyprid larva begins to seek a place of attachment. The antennae and cement glands make the attachment onto objects. During metamorphosis animals can grow to a diameter of 0.23-0.27 in (6-7 mm) in 58 days. Lives for 3-8 years. In some localities, all young molt synchronously. Individuals in same place hatch nauplii at same time; a good number of larvae settle in same place, assuring cross-fertilization.
CONSERVATION STATUS Not listed by the IUCN.
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