i think they get jiggy with a mate and lay eggs.
Hermit crabs lay eggs in the ocean.
so when the eggs hatch the baby hermit crabs know where to get the water so they can have it in their shells to breathe.
Zero. Hermit crabs lay eggs.
Hermit Crabs lay their eggs by going to where seawater is only.
zilch
Yes the lay there eggs in the water in the wild.
They can, but it's not mandatory.
they don't
Yes land hermit crabs do lay eggs if you suppose to have a sot of digged up spot in the tank check for a egg but watch out if you touch the egg the mother will not sense that the egg is hers and hermit crabs carry a disease called salmonella so do not touch 
It's very rare when Hermit Crabs lay eggs in captivity.
yes hermit crabs lay eggs in water and then they will hatch
They lay eggs not give birth