If the zoo or aquarium to which you belong has 50% in the Reciprocity column, you can expect to receive a 50% discount on admission at all the zoos and aquariums on this list (except, of . Call before your visit for details on your membership benefits. Visit for more info about our reciprocity. The Oglebay Good Zoo will extend discounted admission to members of all facilities listed on the Reciprocal Zoo List. The discount amount extended is determined by the agreement .