Plastic reinforced sphere aquarium that Gilbert A. Watrous designed for the San Diego Children's Zoo.
Yes, it's the same Gilbert A. Watrous (1919-1991) who designed this Heifetz lamp, which won a special prize at the MoMA Lamp Competition in 1951.
Source: MoMA
MoMA Lamp Competition
Source: MoMA
Gilbert in 1951
Source: MoMA
Back to the zoo... Watrous was part of a San Diego dream team led by Lloyd and Ilse Ruocoo. John Dirks, J. Swiggett, B. Wand, William “Bill” Noonan, and Charles “Chuck” Faust, the Zoo’s designer, worked on the design of the San Diego Children’s Zoo. It opened June of 1957.
Source: San Diego Zoo
In 1959, some new exhibits and features were added to the Children's Zoo, including the Clark Children's Theater.
The petting zoo.
Source: San Diego Zoo
Brian Wilson was there in 1966
In fact, all The Beach Boys were there.
Source: KCRW
Yes, it's the reissue, but it has a sticker with the Welton Becket-designed Capital Records Building.
See Malcolm Leland at the zoo, here.