"First I Keel-Hauls 'Em..."

Something tells me the Dread Pirate N has been operating in these waters again.  If you're a mermaid with any self-preservation instincts, you'd better not run a-foul of this buccaneer.

Very thorough job.  Note the rope binding her arms. (I suppose you can't make someone walk the plank if they don't have any legs.)