Nature Podcast

00:46 How fishing activity altered the migration pattern of HerringSelective fishing of older herring has resulted in a large shift in the migration pattern of these fish, according to new research. For years, herring have visited sites on the south coast of Norway to spawn, but in 2020 a rapid shift was seen, with the fish instead visiting areas hundreds of kilometres to the north. Researchers have concluded that too many older fish have been removed from these waters, preventing the knowledge of the best spawning grounds being passed to younger, less experienced fish. This finding shows how human activity can affect animal migration, which could have serious consequences for the delicately balanced ecosystems built around them.Research article: Slotte et al.10:37 Research HighlightsArchaeologists have identified tools that the ancient Maya may have used for tattooing, and the self-assembling stable structures that may help ‘forever chemicals’ persist in nature.Research Highlight: Tattoo-making too