Three transients in the south channel with many harbour seals on the rocks, probably trying not to become the next meal for the orcas. The large dorsal fin has a distinctive notch on the back side, which could help identify it. DFO has a 127 page document photos identification for the Bigg’s (Transient) Killer Whales from BC, Northern Washington and Southeastern Alaska. I flipped through the photos, but could definitively identify the orca.