Hello, I'm a Pokémon enthusiast with a deep knowledge of the franchise, including the various creatures that inhabit its universe. When it comes to catching a ghost-type Marowak, it's important to clarify that in the official Pokémon games, Marowak is not a ghost-type Pokémon. It is a ground-type Pokémon that evolves from a Cubone. However, there are fan-made creations and fan fiction where Marowak might be depicted as a ghost-type due to its skeletal appearance and the fact that it is often associated with the concept of death or the afterlife in various cultures.

In the main series games, ghost-type Pokémon are a separate category, and you would encounter them in different locations, such as cemeteries or ghost-themed areas. To catch a ghost-type Pokémon, you would typically weaken it in battle, use an item like a Ghost-type Poké Ball that is effective against ghost-types, and possibly use status moves like Sleep or Paralysis to increase your chances of a successful capture.

If you're referring to a fan-made modification or a different context where Marowak is a ghost-type, the process might be similar to catching any other ghost-type Pokémon, but it would depend on the specific rules of that context.

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This ghost Marowak is one of the few wild Pok��mon encountered by the player after the player has access to Pok�� Balls that is impossible to catch. ... Despite the fact that this Marowak is a ghost, it is not treated as a Ghost-type Pok��mon by the game, and thus is still affected by Normal and Fighting-type moves.read more >>