EN
Seventeen young harbour porpoises, Phocoena phocoena (L.), stranded or caught in fish nets in the southern Baltic the period 1989-1995, were searched for parasites. Four nematode species, Halocercus invaginatus (Quekett, 1841), Pseudalius inflexus (Rudolphi, 1808), Torynurus convolutus (Kühn, 1829) and Stenurus minor (Kühn, 1829), were found in their respiratory and vascular organs, and one trematode Campula oblonga (Cobbold, 1858) was recorded in the bile ducts of a single porpoise. Infection data are given. No nematodes were found in the digestive tract. Although Anisakis larvae occur sparsely in fish in the southern Baltic, the absence of Anisakis simplex in the porpoises studied is noteworthy.