If you're asking about how to catch a Krabby in a Pokémon game, here's some information:
* Where to Find Krabby: Krabby is typically found in areas near water, such as beaches, rivers, and lakes.
* How to Catch Krabby: You'll need to use Poké Balls to catch it. You can increase your chances of catching Krabby by weakening it with attacks, using a special ball like a Great Ball, or by using berries to make it easier to catch.
* Evolving Krabby: To evolve Krabby into Kingler, you need to level it up to level 28.
If you have a specific Pokémon game in mind, I might be able to give you more specific information on where to find Krabby.