Contemporary whaling is subject to intense debate. Canada, Iceland, Japan, Norway, Russia, South Korea, the United States and the Danish dependencies of the Faroe Islands and Greenland continue to hunt in the 21st century. Countries that support commercial whaling, notably Iceland, Japan, and Norway, wish to lift the IWC moratorium on certain whale stocks for hunting.[4] Anti-whaling countries and environmental groups oppose lifting the ban. Under the terms of the IWC moratorium, aboriginal whaling is allowed to continue on a subsistence basis.[5] Over the past few decades, whale watching has become a significant industry in many parts of the world; in some countries it has replaced whaling, but in a few others, the two business models exist in an uneasy tension. The live capture of cetaceanss i for display in aquaria (e.g., captive killer whales) continues.