 The aquarium holds around 2,000 fish from some 40 species, including stingrays and sharks, most of which can be observed while walking through the underwater tunnel.Bastion Point, located at the west end of the Mission Bay, had strategic importance for both Māori and Pākehā.Its commanding view over the entrance to the Waitemata Harbour made it a key site for the defence of Māori settlements and later of Auckland City.