Environmental Reporting BC recently published a report on protected lands and water in the province which shows in detail areas are protected environments.
In B.C., 15.4% of land is protected. 3.2% of marine areas are also protected.
Of particular note when it comes to marine areas is Haida Gwaii (Queen Charlotte Islands), as well ass a large area of the Pacific to the west of Haida Gwaii.
This data shows that the amount of land has doubled in 20 years.
The protected areas are spread across the provinces various ecoregions and biogeoclimactic zones.