Cod Wars Iceland's unilateral extension of its fishery limits from . Unlike in the Cod Wars, the Royal Navy was never sent into Icelandic waters. The British trawling industry, however, implemented costly sanctions on Iceland by imposing a landing ban on Icelandic fish in British ports. The landing ban was a major blow to the Icelandic fishing industry (the UK was Iceland's largest export market for fish) and caused consternation among Icelandic statesmen. The two sides decided to refer one part of the Icelandic extension to the ICJ in early 1953: the controversial Faxa Bay delimitation. Cold War politics proved favourable for
Blue cod change. Since a number of evidence indicated that blue cod are relatively sedentary, the fishing pressure may lead to potential local depletion. Recent studies showed that the genetic differences were significant between mainland List of islands of New Zealand population and Chatham Island population. On the other hand, the differences within mainlandList of islands of New Zealand populations were limited while the pattern of the isolation by distance was detected. Further research using microsatellite DNA markers suggested that some significant genetic differences between mainland population exist which indicate the potential long-distance dispersal, but the dispersal rate is too low to