Check the BC Ferry Schedule for the ferry from either Horseshoe Bay or Tsawassen to Nanaimo (roughly 1.5 hours), then drive up the new Island Highway to Campbell River (driving time is less than 2 hours)
From Vancouver to Nanaimo - Greyhound Canada
From Nanaimo to Campbell River - Greyhound Canada
Destination Campbell River Regional Airport (CYBL)
Abyssal dive boats are located at Discovery Harbour Marina, slip H2.