Sharks will not be found in the straits as the current seems to come from the inside strait (from hardy) and south.... around victoria then out past Cape Flattery. Now if you go out of renfrew to the outside of the bank..... nother story. 10 types of shark I can believe.....but. The sharks you will see are.... the occasional great white(as the are one of the few sharks that can regulate their body temp) and they do frequent these waters. You will see blues quite a bit....caught many but only in times when the temp is up a couple degrees (not this year as the water is down a couple), Six gills will hit bottom bait offerings but are few and far between and VERY docile(somewhat like a nurse shark) and the one that you would want to target....but...... have no info on it as I have only seen them and never caught one, would be the salmon shark...youtube it... they are built like a mako and fight hard... if you can find them that would be some fun
hope that helps