Yes. Every living thing needs water.
no because they could be land hermit crab and die
They cannot live with a land hermit crab because land hermit crabs live out of water so the fish would die (as you know) if it is out of water.
It depends. If it is a land hermit crab "no", you do not want to put it in deep water to make it swim, it can actually just drown and die. I used to have a hermit crab and my friends babysitted it and when i got back the water bowl was spilt and my hermit crab was laying on its side, dead. If it is a water hermit crab, "yes". It needs water so it can swim, and just relax in it. it needs it!
It depends on how healthy the hermit crab is in my opinion
the crab will sooner or later die off DO NOT REMOVE THE HERMIT CRAB SHELL if a crab dies out of it dries out and its a slow death so for the sake of the crab DO NOT REMOVE THE CRAB SHELL
Yes, you could possibly drown it. Hermit crabs can only swim in an inch of water. That is unless your hermit crab is huge, it could go in 2 inches. I WOULDN'T RISK IT.
yes
your hermit crab will die and give u a disease known as gingivitis
no, so don't put water in your tank that is to deep. It is still important to have drinking water, though, so try putting a sponge in some water instead. yes,they swim but in shallow water,i have a hermit crab and it has a bowl with shallow water in it.My hermit crab goes swimming sometimes,but don't force the hermit crab.
The shell that the hermit crab adopts and wears and changes many times throughout his decades long lifetime helps him in several ways. The hermit crab has a very delicate abdomen that is protected by the shell. Without this shell, his abdomen could become punctured very easily and the crab would die. The hermit crab also carries water in his shell to keep the abdomen moist. If it were to dry out, again, the hermit crab would die. The crab balances the salinity of the water within his shell by accessing fresh or salt water as needed. The shell is also his shelter, and protects him from predators. The ideal fitting shell will allow the hermit crab to pull fully inside and to block off the opening with his large pincer.
They can't. They will die
Yes.