In the context of JoJo's Bizarre Adventure: Stardust Crusaders , is the name of the Stand featured in Episode 6 (and chapters 131–134 of the manga). It is an aquatic Stand used by an assassin posing as the real Captain Tennille . Plot Summary: Episode 6
It can attach parasitic barnacles to an opponent’s Stand, which drain their energy and make it difficult for them to move.
For more details on the episode's production and lore, you can visit the JoJo's Bizarre Wiki or read the full story arc summary on JoJo Wiki . 6 : Dark Blue Moon
While traveling by sea toward Singapore, the Joestar group is accompanied by a runaway girl named Anne. They discover that the ship's captain is an impostor working for DIO. The impostor drags Jotaro Kujo into the ocean, where his Stand, Dark Blue Moon, holds a massive advantage.
It can launch sharp, scale-like projectiles that act as blades in the water. In the context of JoJo's Bizarre Adventure: Stardust
Its claws are sharp enough to slice a shark in half or destroy a ship's propeller. The Defeat
Despite being trapped in a whirlpool and drained by barnacles, Jotaro defeats the Stand by focusing all of Star Platinum’s energy into its fingers. This allows him to perform the technique, extending his fingers with enough force to cut through Dark Blue Moon’s head. For more details on the episode's production and
Dark Blue Moon is designed specifically for marine combat and is described as being faster than any sea creature.