Waikiki Aquarium

This guide to the Waikiki Aquarium traces its start in 1904, when a Honolulu trolley company built thirty-five fish tanks simply to give riders a reason to ride the streetcar to the end of the line. It follows the aquarium's move to a saltwater site in 1955, and introduces the chambered nautilus living quietly in one of its tanks, a spiral-shelled relative of squid and octopus little changed in hundreds of millions of years. Look for its tank away from the main crowds, tucked past the busier displays.