Description:  The Pirates of Dark Water is a Hanna-Barbera animated series about a young prince named Ren who travels the alien world of Mer with a crew of misfits to find the 13 Treasures of Rule. Their quest is to stop the Dark Water, a sentient substance that is consuming the planet. They are relentlessly pursued by the evil pirate lord Bloth, who wants the treasures for his own power.

Premise: Prince Ren must gather the 13 Treasures of Rule to save the world of Mer from the Dark Water.

Antagonist: The main villain is the ruthless pirate lord Bloth, who seeks the treasures to control the world.

Crew: Ren's crew consists of: Ioz: A cynical, treasure-hungry pirate. Tula: An ecomancer with a connection to nature. Niddler: A greedy, monkey-like bird creature.

World: The story is set on the alien world of Mer, which is a water-based planet with many islands and unique creatures.