Illustration of Yogi Bear coming out of a grey and white cake on a blue background with purple and yellow text
The popular Hanna-Barbera character Yogi Bear served as the mascot for Marineland's 25th birthday in 1979, a year that marked the 25th anniversary of the park's 1954 opening. Yogi Bear first appeared on television in 1958, and quickly became one of the most recognizable Hanna-Barbera cartoon characters in the years that followed, both on TV and in the park.
Marineland was a public oceanarium and tourist attraction located on the Palos Verdes Peninsula coast in Los Angeles County, California that operated from 1954 to 1987. In 1977, Marineland was sold to Kroger Company and Taft Broadcasting, the owners of the Hanna-Barbera animation studio. Taft resolved to remake the park using Hanna-Barbera cartoon characters, and the park was reopened as "Hanna-Barbera's Marineland" in 1978. In addition to the integration of character-themed areas, several attractions were added to the redesigned park. In 1986, Marineland was sold to the owners of SeaWorld, who arranged for the transportation of the park's marine animals to SeaWorld San Diego before closing Marineland in 1987.