The northern limits of western red cedar and salal correspond to the northern boundary of this Section. Hydric vegetation of sphagnum moss, sedges, and willows predominate on peatlands. Some alpine heath meadows occur on the highest mountains. Bald eagles and marbled murrelets nest in forested areas on the islands and coastal mainland in this Section. Vancouver Canada geese nest and winter throughout southeast Alaska.
Blue grouse are common throughout the area.
Northern water shrews, deer mice, and long-tailed voles are commonly present. Marten were introduced to Prince of Wales Island in 1934. Mountain goats occur on the mainland and were introduced to Revillagigedo Island in 1983 and 1991. Sitka black-tailed deer occur throughout the Section. Rocky Mountain and Roosevelt elk were introduced to Etolin Island in 1987.