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Science 30 October 1970:
Vol. 170. no. 3957, pp. 538 - 539
DOI: 10.1126/science.170.3957.538
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Articles

Porifera: Sudden Sperm Release by Tropical Demospongiae

Henry M. Reiswig 1

1 Biology Department, Yale University, New Haven, Connecticut 06520

Three tropical marine demosponges inhabiting the deep coral reefs of Jamaica expel immense clouds of milky fluid from exhalant apertures. Analysis of samples shows this fluid to contain mature male gametes. The behavior is an individual or a population event in different species.

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Science. ISSN 0036-8075 (print), 1095-9203 (online)