Reproductive Biology

Separate sexes, with males spawning into the water and females releasing eggs after fertilizing them. Larvae must be capable of dispersing to new vents since vents are ephemeral habitats.


SIGNIFICANCE TO HUMANS "Posterchild" of hydrothermal vents. ♦



Rouse, Greg W., and Fredrik Pleijel. Polychaetes. London: Oxford University Press, 2001.

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Rouse, G. W. "A Cladistic Analysis of Siboglinidae Caullery, 1914 (Polychaeta, Annelida): Formerly the Phyla Pogonophora and Vestimentifera." Zoological Journal of the Linnean Society 132 (2001): 55-80.

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Biogeographical Perspective of the Deep-sea Hydrothermal Vent Fauna." Advances in Marine Biology 34 (1998): 354-442.

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Greg W. Rouse, PhD

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Phylum Sipuncula Number of families 6

Thumbnail description

Unsegmented marine worm-like animals with a body divided into a trunk and retractable introvert

Photo: Peanut worm (Phascolosoma sp.) with partially extended introvert. (Photo by L. Newman & A. Flowers. Reproduced by permission.)

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