it depends which kind only a hermet crab if you live by a beach you usually can just go to a suvineir shop and by it if not a pet store
yes
Hermit Crab
Get hermit crab food from the pet store.
Sand, or fine gravel on the bottom of an aquarium, or a screen cage is ideal. You need to keep the cage temperature at least at 72 degrees Fahrenheit. The humidity level is best a 70%. The habitat for you hermit crab should have a moist warm feel, this will keep the gills of the hermit crab in check. Keep a spray bottle of fresh water handy and periodically spray your hermit crab habitat with it.
yes they are.
no
pet co ?
Yes, but they usually require live oysters to survive. As such, you may want to have a live colony of oysters up and running first, before introducing your crab and letting it fend for itself.
crabs are scavengers in the wild. I am assuming it is a hermit crab you are asking about. There are a number of crab foods you can find at your local petstore.
petsmart and any other pet stores that are pet assured.
The same way you would look after a crab from the pet store! (make sure that you know whether it is a land or water crab).
Many pet and wild hermit crabs can live anywhere from 20 to 30 years if kept properly. Some owners say they live longer if they have another crab to keep them company. :)