It's been over 35 years since the first time I went to the San Francisco Aquarium. Some of the exhibits are still exactly the same as I remember them as a kid, but the saltwater, especially the reef exhibits have come a long ways.
S.F. Steinhart Aquarium used to be my local hangout when I was a kid, teenager and adult. When I was small I split my eyebrow open swinging on the brass partition that kept you from getting to close to the exhibitions in the African Hall. I think some of those fish kept there are older than I am but yes the aquarium is beautiful. Wish I had the room and money for a large 20k gallon tank!!