Core Insights - An international team has reported evidence of barnacle invasion in the Arctic waters of Canada, indicating that climate change is allowing foreign species to invade previously cold regions [1] Group 1: Research Findings - Researchers from the British Antarctic Survey and Canadian counterparts published a paper in the journal "Global Change Biology," utilizing environmental DNA barcoding technology to identify genetic material from species in water samples collected from the Arctic [1] - The genetic material of the barnacle species, Amphibalanus improvisus, was found in the samples, which is commonly found in European and Pacific waters and can cause biofouling in ships, pipelines, and other infrastructure [1] Group 2: Climate Change Impact - Historically, the cold waters of the Canadian Arctic prevented the migration and establishment of invasive species [1] - Climate change is rapidly warming the Arctic waters, reducing sea ice, and facilitating new shipping routes, which increases the likelihood of species invasion from other marine areas [1] - The rising water temperatures enhance the survival and establishment potential of invasive species compared to the past [1]