The Great Bear Rainforest occupies 6.4 million hectares of coastal British Columbia — roughly the size of Ireland — and constitutes the largest intact temperate rainforest ecosystem on Earth. Formally protected in 2016 under the Great Bear Rainforest Agreement, which placed 85% of the region under varying degrees of protection, the area is home to grizzly bears, black bears, spirit bears, wolves, Sitka black-tailed deer, humpback whales, orcas, and a density of Pacific salmon that supports one of the last fully intact salmon-to-forest nutrient cycles.
The Spirit Bear
The Kermode bear (Ursus americanus kermodei) — the spirit bear — is a naturally occurring cream-coloured morph of the American black bear, produced by two copies of a recessive gene variant at the mc1r locus. The gene variant is not associated with albinism; spirit bears have normal pigmentation in their eyes and skin.
Approximately 10–20% of black bears in certain coastal valleys of the Great Bear Rainforest carry the cream coat. Gribbell Island is the highest-concentration area, with estimates suggesting 20–30% of the local black bear population expresses the white coat. Princess Royal Island is the other primary concentration area.
Why the gene persists: Research published in 2018 in Ecology Letters documented that spirit bears are significantly more effective at catching salmon in daylight conditions than dark-coated bears — the pale coat is less visible to fish looking upward against bright sky. This foraging advantage appears sufficient to maintain the gene frequency despite the visibility cost in other contexts.
Grizzly Bears in the Great Bear Rainforest
The coastal grizzly bears of the Great Bear Rainforest are among the largest in the world. Unlike interior grizzlies, which rely on ungulates, roots, and berries, coastal grizzlies have access to abundant Pacific salmon — Chinook, sockeye, coho, pink, and chum — that arrive in predictable, concentrated timing across hundreds of coastal rivers and streams.
The salmon-to-forest nutrient transfer mediated by bears is well-documented: when a bear catches a salmon and carries it into the forest to eat, the nitrogen from marine sources (measurable isotopically as marine-derived nitrogen, or MDN) enriches the soil around cedar, spruce, and hemlock trees. Studies have documented MDN signals in trees growing more than 500 m from salmon streams, tracing the nutrient pathway from Pacific ocean to old-growth forest via grizzly bear.
Prime grizzly viewing areas: Koeye River, Atnarko River (within Tweedsmuir Provincial Park), Bella Coola River corridor, and the various rivers draining the Interior to the Knight Inlet system.
Access
The Great Bear Rainforest is accessible in several ways, none of them simple:
By boat: Most wildlife-focused visitors arrive via zodiac or expedition vessel from Port Hardy (northern Vancouver Island) or from Bella Bella (accessible by ferry and floatplane). Liveaboard vessel tours lasting 7–14 days offer the most comprehensive access to otherwise unreachable inlets. Itineraries typically combine whale watching, bear viewing, and First Nations cultural sites.
By ferry: BC Ferries’ Discovery Coast Passage route operates seasonally (June–September), connecting Port Hardy to Bella Coola via Shearwater, McLoughlin Bay, Ocean Falls, and Klemtu. This route traverses the heart of the Great Bear Rainforest and offers wildlife viewing from the ferry deck. Advance booking is essential; vehicle space is limited.
By floatplane: Charter floatplane access from Port Hardy, Bella Coola, or Campbell River reaches remote lodges and bear viewing platforms in 30–60 minutes. This is the most time-efficient option for visitors with limited schedules.
By road (Bella Coola): The Bella Coola Valley, accessible via Highway 20 from Williams Lake (Chilcotin Highway), provides road-accessible entry to the eastern Great Bear Rainforest. The final descent on Highway 20 (“The Hill”) is a steep unpaved switchback grade (18% maximum) requiring careful driving; most passenger vehicles are capable with appropriate preparation.
When to Visit
Late August to mid-October: Peak salmon season — and the primary wildlife window. Bears are hyperphagia-feeding heavily; spirit bear sightings peak in September–October in accessible valleys. Weather is more settled than spring; temperatures 12–18°C. This is the high season for lodge-based bear viewing.
May to June: After denning bears emerge and before salmon arrive, bears feed on sedge grass in estuaries. Excellent whale watching (humpbacks arrive April–May). Fewer visitors. Weather is wetter.
July: Transition period. Some salmon early in southern rivers. Good for whale watching. Bears less predictable for river viewing.
November to April: Most lodges closed. Ferry service reduced. Not recommended for wildlife viewing.
Accommodation
Commercial bear-viewing lodges operate within or adjacent to the Great Bear Rainforest on a seasonal basis. All are bookable through First Nations-operated tourism companies or wildlife tour operators. The Kitasoo/Xai’xais Nation (Klemtu), Heiltsuk Nation (Bella Bella), and Nuxalk Nation (Bella Coola) operate or co-manage most tourism access within their traditional territories.
Advance booking of 6–12 months is standard for peak-season (September) lodge stays.
For the full context on British Columbia’s grizzly bear population and distribution, see the Grizzly Bears guide. For photography-specific planning in remote wilderness settings, see the Wildlife Photography Field Guide.