The halibut is the largest flatfish and one of the largest fish of any type in the world's oceans. Fully grown halibut prefer water that is at least fifty metres deep, and are usually found in waters substantially deeper than this and seek out depths of over one thousand metres to spawn. This means that most anglers catching halibut will be on a boat using pirks, lures and livebait. In Norway and other parts of Scandinavia it is possible to catch sizable halibut from deep-water rock marks.
 
The term supreme ( or thick cut ) used in cooking and culinary arts refers to the best part of the food.