ice edge
as defined in Regulation (EU) 2023/1805 of the European Parliament and of the Council of…, Article 3, point (22) (Definitions)
the demarcation at any given time between the open sea and sea ice of any kind, whether fast or drifting, as set out in paragraph 4.4.8 of the World Meteorological Organisation Sea-Ice Nomenclature, March 2014