[Baz]

In 1962 Marlin returned to the Saint Louis Zoo as its second full-time director and began working on "Mutual of Omaha's Wild Kingdom," which earned four Emmys. In his programs, Marlin followed migrating reindeer in Lapland, hog-tied alligators in the marshes of the Florida Everglades, and dived into the water off Australia's Great Barrier Reef looking for sea serpents. He televised travels through the world's jungles, velds and deserts -- places few of his viewers had ever seen.

He retired as Director in 1970.

https://www.stlzoo.org/about/history/marlinperkins

I visited the zoo in 2001: