By the early 1920s, nearly every major metropolis in the United States and abroad had an aquarium. But while Chicago’s Lincoln Park Zoo housed an impressive collection of freshwater fish, civic leader John G. Shedd and his colleagues wanted to build a standalone aquarium swimming with saltwater species. Shedd’s contribution of $3 million paid for nearly a million gallons of seawater, which were transported by rail from Florida’s coast before filling tanks large enough to accommodate sea mammals as well as fish. Even though Shedd died before the aquarium’s construction, he will forever be remembered for creating the first inland aquarium with a permanent saltwater collection. His dream continues to thrive with the Shedd’s scores of undersea creatures, from sharks and dolphins to vibrant sea cucumbers, all showcased in educational, eye-catching exhibits.