Shedd aquarium, a not-for-profit, tax-exempt organization, gratefully acknowledges the sustaining contributions of the people of chicago, state of illinois and chicago park district. shedd is an accredited member of the association of zoos and aquariums, a smithsonian affiliate, and humane conservation certified by american humane.. Shedd aquarium (formally the john g. shedd aquarium) is an indoor public aquarium in chicago, illinois in the united states that opened on may 30, 1930. the aquarium contains 32,000 animals, and was for some time the largest indoor aquarium in the world with 5,000,000 us gallons (19,000,000 l; 4,200,000 imp gal) of water..
