Aquariums are always evolving in step with the times, but their role is not limited to displaying live, swimming fish. For those involved with aquariums, it is no longer enough to strive for the good health of the animals they raise and display, they must also keep aware of the requests and interests of their visitors, the aquarium's mission as defined by society, and the condition of the global environment. Monitoring these areas, they must then consider possible responses to necessary changes.