Pom Pom Crab Pregnant?

[kingsbum]

Does anyone know how crabs reproduce? It looks like my pom pom crab has a very large egg sack underneath it. Anyone know if there has to be a male to fertilize the eggs? Or am I about to have waaay more crabs then I bargained for?! Either way I suppose its not a bad thing, just curious.






Up Close Picture:

[Doodaa]

The eggs need to be fertilized by a male. I think that they need to be fertilized after they are laid by the female. So...if those are eggs, and I can't tell from those pics, and you don't have a male, then I would say that you won't have babies.