Hermit crabs molt regularly throughout their lives as they grow. The frequency of molting can vary depending on factors such as the crab’s age, size, and species, as well as environmental conditions such as temperature and humidity.
On average, juvenile hermit crabs may molt every few months, while adult hermit crabs may molt once or twice a year. However, some species of hermit crabs may molt more frequently, and others may molt less often.
During molting, the hermit crab sheds its old exoskeleton and replaces it with a new one. Molting is an important process for hermit crabs as it allows them to grow and replace damaged or worn-out body parts. During the molting process, hermit crabs may appear inactive or may hide in their shell for several days or weeks until the new exoskeleton hardens.