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.
There are water hermits that live in the salt water ocean and would die if out over 24 hours. And there are land hermits which are born in the ocean but crawl to land and never go back. Two different crabs but very related. Hermits on land don't live in water but they use fresh water all the time.