Perilous life cycle of salmon

Given all the obstacles the wild salmon has to face, the only wonder is that it is managing to survive at all. While the farmed salmon industry is thriving, the situation facing the wild fish is precarious, experts warn.

It’s a never-ending story — the uphill struggle by campaigners to save a fish that is so much part of Irish life and mythology, and efforts by scientists using modern technology to establish the causes of ongoing decline in stocks.