A combination of flawed science and over-optimism meant experts misinterpreted the data that helped calculate estimates of cod stocks back in 2017.
The 2016 heatwave that caused mass bleaching on the Great Barrier Reef didn't just kill corals - it also significantly changed the makeup of fish communities that call these reefs home.
Animals shed bits of DNA as they go about their lives. A new study of the Hudson River estuary tracked spring migration of ocean fish by collecting water samples and seeing whose DNA was present when.
The focus of food production systems, including aquaculture, must move beyond maximising yields to consider nutritional quality too.