 A map of the ecological regions of Quebec shows the archipelago as lying in ecological sub-region 5g-T Hautes collines de Baie-Comeau−Sept-Îles, within the eastern fir/white birch domain of the boreal zone.The Sept Îles archipelago is part of the Sept-Îles IBA, an Important Bird Area.The IBA covers an area of including part of the City of Sept-Îles, the bay and its coastline, the archipelago and the Checkley plain.