We are building for a whites and two hermit crabs. They will be in the same big cage but with walls to keep them both in thier very own homes. The Whites will have the biggest part and then we will have a water tank for each in between and then the hermits crab area and a feeding area for the Whites. I will put pics when we are done. It is going to take awhile because we have to get the plexiglass and all the stuff that goes in it.