Anisakis spp. induced granulomatous dermatitis in a harbour porpoise Phocoena phocoena and a bottlenose dolphin Tursiops truncatus.

Cetaceans are well known definitive hosts of parasitic nematodes of the genus Anisakis (Nematoda: Anisakidae). Anisakid nematodes are also a health hazard for humans, potentially causing gastrointestinal infections or allergic reactions following the consumption of infected fish. In marine mammals, the nematodes develop from third-stage larvae to adults in the stomachs.