Why study salmon at sea?
Salmon stocks have declined in both Europe and North America and all evidence points to there having been changes in the ocean phase. It is not known where these changes have occurred, but they may be associated with factors operating in particular oceanic areas or at particular times. Many of the problems that might have accounted for the decline in stocks have been eliminated, or have been or are being addressed. The main outstanding problem is related to factors at sea, which is why marine research is urgently required.