An encrusting gemmuliferous haliclonid species is described from the Oosterschelde (S.W.- part of the Netherlands), which is demonstrated to be conspecific with Haliclona loosanoffi Hartman, 1958. This species was hitherto only known from the New England coast (U.S.A.). The species is compared with other encrusting haliclonids occurring in Western Europe.

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Journal Beaufortia
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Citation
van Soest, R.W.M. (1976). First European record of Haliclona loosanoffi Hartman, 1958 (Porifera, Haplosclerida), a species hitherto known only from the New England coast (U.S.A.). Beaufortia, 24(316), 177–187.