English: A rockfish hides in a red tree coral (Primnoa pacifica) in Juan Perez Sound in Haida Gwaii, British Columbia. The Finding Coral Expedition found high abundances of Primnoa pacifica at Dundas Island, Portland Inlet and Juan Perez Sound. Current research indicates that these are the most important habitat forming corals in the North Pacific. The expedition found dense forests up to one meter high and two meters wide providing habitat, refuge and food for a large number of fish and invertebrates.