The Sub-Mariner" was a segment of the 1960s animated series The Marvel Superheroes.
Sub-Mariner appeared in the Spider-Man episode "Wrath of the Sub-Mariner", attacking New York in response to pollution caused by The Kingpin.
He appeared in the "7 Little Superheroes" episode of Spider-Man and His Amazing Friends, alongside Captain America, Shanna, and Dr. Strange. Another episode featured someone dressed as the Sub-Mariner.
Sub-Mariner had a guest-starring role in an episode of the 1994 Fantastic Four animated series, voiced by James Warwick.