Stocking BC14

Alright, so I was considering what to stock my BC 14g with. It's only going to be filled up to 10g, since it's plumbed in with my other tank, so I was thinking of something like fiddler crabs, or another quasi-terrestrial invert, to go in the tank. Is there anything else like fiddler crabs, that lives at least a part of its life on land, would fit in the 14g, and would be safe with soft corals?

I know someone had a link to a crazy tank with a volcano in the middle; is anyone familiar with the types of crabs he had in it?

 

I know he had some fiddler crabs. Most snails live at the tidal line, so they will live in and out of the water. They aren't anything fancy, but may enjoy the open air for a while, especially nerite snails.

 

So, nobody else knows about any semi terrestrial inverts?