[6] The mountain and the sounds around it are home to abundant wildlife, such as black bears, whales, orcas, sea lions, and hundreds of thousands of seabirds.

Haida Gwaii has four subpopulations of an endangered plant: Oxystegus recurvifolius, endemic to remote islands in the North Pacific.

This plant only thrives in extreme oceanic, mediterranean, and maritime subpolar climates with ultra-high precipitation levels.

Snow is somewhat common in the winter months (November to March), at 25 days per year on average, but usually doesn't fall in the warm season (May to September).

[8] The winter-summer temperature swings of Mount Moresby are extremely oceanic compared to other places at similar latitudes (Goose Bay, Canada; Khabarovsk, Russia), as well as areas slightly farther south (Qiqihar, China; Augusta, Maine), even accounting for the somewhat high elevation.