A few other shows such as Cowboy in Africa, Gentle Ben,[citation needed] as well as an episode of Star Trek ("Shore Leave") were also shot there.

[citation needed] Helfer first relocated his animals to a second site in Ventura County before the move to Redwood City.

The general area of the site was diked off from the bay about 1910, and was used for pasture until about 1946 when it was converted to salt evaporation ponds.

Available topographic surveys indicate that surcharges of two to three feet (1 m) were placed over some of the old slough areas prior to construction of the animal park.

However, during its time period the park took an animal "preservationist" stance, and it was a common site for fundraising efforts by environmental groups.

Marine World changed management in late 1969 during the off-season, adding new animal displays, including a large elephant seal named "Big Lou".

Marine World management had been in discussions with Ralph Helfer shortly after the Africa U.S.A. flood, at the behest of Lanny Cornell, a well known animal veterinarian in the industry.

Due to persistent financial struggles,[12] the Marine World/Africa U.S.A. park moved in 1986 to Vallejo, California,[13] where it eventually became Six Flags Discovery Kingdom.