WWF says we risk losing species critical to human food security unless action is taken to halt overfishing and other threats to marine lifeTuna and mackerel populations have suffered a “catastrophic” decline of nearly three quarters in the final 40 years,according to modern research.
WWF and the Zoological Society of London found that numbers of the scombridae family of fish, which also includes bonito, or fell by 74% between 1970 and 2012,outstripping a decline of 49% for 1234 ocean species over the same period.
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Source: theguardian.com