Further action on a much wider scale may be required. According to a recent report "Scotland's marine life could be almost wiped out within 50 years unless tough action is taken to manage the way humans use the seas". Fears were expressed by a consortium of environmental organisations that commercial fish stocks, including Atlantic cod are suffering from over-fishing, that fish farming, especially for salmon is damaging the aquatic environment, a reduction in coastal marsh habitats is affecting marine bird life, litter in densely populated estuaries such as the Firth of Clyde is affecting all forms of marine life and that the growth in off-shore tourism was deleterious to populations of, for example, basking shark. A call was made for a 'Scottish Marine Bill' to co-ordinate and manage human activity at sea and to provide more protected areas such as marine national parks. The Marine (Scotland) Act 2010 was subsequently passed by the Scottish Parliament.