New Hermit Crab and setup

[ramanth]

OK ... so the Crab isn't 'part' of the shell --- the shell is just a 'rented room' ??

The one doing the Spidermman *roof walk* on the tank cover ...
He's draggging his HOUSE along with him??
Just HOW does a Crab "hold onto" his House whilst he's wandering around the abode -
I see no suspenders??

Correct! Here is a page that explains their anatomy:

http://www.thecrabbagepatch.com/crabanatomy.html

They use an appendage called a uropod to hold onto the shell. If you see a hermit without a shell, it's either stressed, sick, or already dead.

Now the really DUMM one:
Are they UNDER water, like a Phish; or stopmin around on dry sand?

These crabs are the dry land variety, but they need both salt water and fresh water offered to thrive, hence the two water bowls.