LEGACY orga­ni­za­tion. The liv­ing Bar­ents Sea with its com­plex com­mu­ni­ties and inter­ac­tions is evolv­ing under the exter­nal con­straints of nat­ur­al forc­ing and human impacts. The sus­tain­able man­age­ment of the region and resources resides with the capac­i­ty for assess­ing its future state. The Research Foci (RF1-4) rep­re­sent “what” LEGACY is inves­ti­gat­ing, the Research Activ­i­ties “how” (A–C), includ­ing impact and lega­cy in the pub­lic domain (D).