This form includes verbal or speech developmental apraxia, perhaps the most common form of the disorder. Constructional apraxia affects the person's ability to draw or copy simple diagrams or to construct simple figures. Oculomotor apraxia is a condition in which patients find it difficult to move their eyes.
Medium ones about the size of a golf ball may molt every four to six months and stay buried for about one to three months. The smaller hermit crabs may molt as often every month or even every few weeks for the tiniest ones, and may stay buried to do it for only a couple of weeks or months.
A captive hermit crab's life span depends on how well he's cared for. Jeffrey Hamilton/Digital Vision/Getty Images. If the wild hermit crab is fortunate enough to live his life in his natural habitat, he can live up to 30 years. A crab in captivity may have a much shorter life, not even reaching 1 year.