If you want to see Orcas in their natural habitat, take the ferry between Vancouver and Victoria. I do it frequently and we see Orcas somewhat regularly. It's not as convenient or predictable, but that much more amazing when you see them in the wild.

Also, if your very lucky you can walk around the sea wall in Vancouver and occasionally see Orcas and other aquatic wildlife.

I saw orcas swimming in Vancouver harbor a few weeks ago.

Go to a coastal area. Optionally bring binoculars. It’s free, and a great way to see the creatures in their natural habitat behaving naturally.

Nature Documentaries now with modern equipment (drones, remote camera's, field camera's, 4k+) give people better views of whales and dolphins in their actual real habitats far better than aquariums ever did.

Go to BC and take a whale-watching tour. Dress warm.

Boat? Swim?

Ya don't