Well, this was before Hanna-Barbera entered the theme park business with their acquisition of Marineland in the 1970s. So, I can most definitely see this ad as having been legit and authorized by Hanna-Barbera.

Well, this was before Hanna-Barbera entered the theme park business with their acquisition of Marineland in the 1970s. So, I can most definitely see this ad as having been legit and authorized by Hanna-Barbera.