The relationship between a hermit crab and a shell is that thy are mutualism.
You must always have a spare larger shell for a hermit crab as they have no natural shell of their own. Just place a larger shell in the tank and if the crab does not use it straight away, don't worry, it eventually will do as they need larger ones as they grow.
A shell protects a hermit crab.
Hermit Crab, turtle, and clam fit this analogy.
Hermit crabs need a shell because inside of the their shell is their soft tail or body. It needs it's shell because other hermit crabs can hurt or damage their tail or body that's inside of the shell. Hermit crabs will always be in a shell. The only time when they aren't in a shell is that quick few seconds when they change shells into a bigger one to grow. If your hermit crab is running around without it's shells there is something wrong with your crab. Go to the Mall of America (Nickaloden Universe) what ever you want to call it and ask the person why. I bet he can help you.
not long you should try a to find a way to put him back in his shell or he will die. My Hermit crab left his shell and never made it back. In other words: He left the house and never came back...
Commensalism
well mostly the difference between crabs and hermit crabs is that one is not born with a shell and one is. Also hermit crabs tend to be smaller
It depends who the Hermit Crab borrowed its shell from.
AnswerThe advantage is that they can hide in it. The disagvantage is they are very slow with it onspencer is also gay.
the hermit crab attaches the anemone to its shell as protection from the big fish with the sharp teeth and octopuses and squids and you know what else is a hermitcrab YOUR MOTHERR:P
Snail shells are formed biologically as the snail grows up. Hermit crabs occupy empty shells and other containers, instead.
Your hermit crab cam go fast depending on the whieght of the shell on the hermit crab. If the shell is light the speed of the crab will increase, if the shell is heavy on the crab the speed will decrease.
When a hermit crab outgrows its shell, it will move into a larger shell.
a crab with a shell
They livde to gether because the shell is a home for the hermit crab!
Answer: The shell would have had to have it before the hermit crab moved in or something got stuck to it.
mutalism