Suckophant

The Suckophant is a minor antagonist featured in'' Yellow Submarine. ''Its name isn't mentioned in the film, but it does have an impact in the film.

Yellow Submarine
The Suckophant is first shown in the Sea of Monsters when it devours a burping monster. As the submarine ventures through the sea, the Suckophant swallows up any creature in its path. It does the same to the submarine, the ocean, and then itself, sending the crew to oblivion, but the Beatles and Captain Fred survive.