Bottom trawling has operated for over a century on heavily fished areas like the North Sea and Grand Banks. overfishing has long been seen as causing major ecological changes to the fish species on the Grand Banks. Lately there is concern about the damage which benthic trawling does to the seabed. A species of particular concern is the slow-growing, deep water coral "Lophelia pertusa". This species is home to a large community of deep sea organisms. It is easily damaged by fishing gear. On November 17, 2004 the United Nations General Assembly urged nations to consider temporary bans on high seas bottom trawling. Bottom trawling has been blamed for reducing the populations of many of fish species. These include species such as orange roughy, barndoor skate, shark, and many others.