sentences:  Many exhibits contain man-made structures that were left in the bay to accumulate living organisms prior to the aquarium's opening; in Monterey Bay Habitats, real pilings were obtained from the city's harbor department for the exhibit's wharf section.In others, artificial rocks tricked visitors and fish alike.With the aquarium's debut, this "nature-faking" via human manipulation did not trick some, but the fakeness' did not necessarily detract from the aquarium's intrinsic value."