This ad is probably the ne plus ultra of "Missed Opportunities" when it comes to Aquaman not being included in something he should have been.
How can you not feature Aquaman in a shot of the Super Friends while they're schlepping for an aquatic/acrobatic show? Especially since Aquaman was represented in the show itself!
This ad ran on the back cover of pretty much every DC comic for a couple of months in 1977. As a kid, I grimaced every time I saw it, which was a lot. Bah!