An invasive species of Pacific oyster is rapidly spreading along the Swedish west coast, posing a threat to native ecosystems and the local shellfish industry. These oysters, known colloquially as “the sea’s falukorv” (referencing a Swedish sausage), are sharp and reproduce quickly, outcompeting native species and disrupting the marine environment. Their proliferation is linked to warmer waters and a lack of natural predators. The oysters also present a hazard to bathers due to their sharp shells. Authorities are exploring methods to control the population, including harvesting and exploring potential uses for the oysters, but a long-term solution remains elusive. The spread is causing concern for tourism, as the oysters accumulate on beaches and impact recreational activities.