At one point there were killer whales at the aquarium, but a complete overhaul created "The Wild Coast" with pools for dolphins, seals, sea lions and a single porpoise. There has always been a pinniped pool and two sea otter exhibits, but the other animals were added after the orcas left in a reconfigured area. On a side note the Vancouver Aquarium has the only captive harbour porpoise in North America.