Behaviour:
• Normal: They are nocturnal and therefore more active during the
night.
• Socialisation: Hermit crabs can live in colonies but only keep a
few in the tank.
• Activity levels (moulting etc): They shed their exoskeleton and
grow a new one. This moulting occurs every 2 –18 months
depending on their age, size and habitat. During this time they
are very vulnerable and will bury themselves in the sand. It takes
up to 10 days for the new exoskeleton to harden. They often
consume the old skeleton. As they grow they need to replace
their host shell. They require a shell that fits their whole body and
allows for room to grow. This also assists with moisture
management. They will not change if no suitable shell is available
and may fight if there are not enough shells.