A decline in the size of some species of fish in the North Sea could be due to a rise in water temperatures, according to research

Scientists found that the maximum length of haddock, whiting, herring, Norway pout, plaice and sole decreased by as much as 29% over a 38-year period when temperatures in the North Sea increased by between 1C (1.8F) and 2C (3.6F)….
Irish Independent 28/01/2014 Read the article ‘Warmer seas ‘ making fish smaller’

Irish Independent - Between 1970 and 2008 the length of haddock in the north part of the North Sea decreased by 29 per cent
Irish Independent – Between 1970 and 2008 the length of haddock in the north part of the North Sea decreased by 29 per cent