The Snorks (partially found unaired pilot of Hanna-Barbera animated TV series; 1982)
The Snorks is an animated television series produced by Hanna-Barbera which ran on NBC from September 15th, 1984, to May 13th, 1989. The series was created by Belgian cartoonist Nic Broca as a competitor of The Smurfs, after Broca went into troubles with Peyo, author of the original Belgian Smurfs comics. Before that, a three-minute pilot was produced.
Not much is really known about the pilot. It featured two unknown Snorks (most likely background characters) that didn't apparently make it into the show.
The pilot was never fully shown to the public. Clips from it can be seen in a promotional spot they had for the NBC Saturday Morning kids' block with Alvin and the Chipmunks singing. It had clips from various shows including The Snorks.