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Parasites

Sperm whales can suffer from parasites.Out of 35 sperm whales caught during the 1976–1977 Antarctic whaling season, all of them were infected by Anisakis physeteris (in their stomachs) and Phyllobothrium delphini (in their blubber).Both whales with a placenta were infected with Placentonema gigantissima, potentially the largest nematode worm ever described.