Peep in the Deep

Olive has a map to a sunken treasure, but Bluto stowed away and is determined to beat Popeye to it. First, he sees to it that Popeye gets stuck inside a giant clam. Next, he jams a swordfish into the ship's figurehead, creating a mermaid that Popeye falls for, until the swordfish has enough and saws his way out.