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.
The amount of time it takes for a molt depends on the conditions it is molting in, how long they have gone since the last molt and the overall health and size of the crab. A grape-sized crab can take anywhere from 2 weeks to over a month to do this, where a lemon sized crab could take 3 or four months or more!