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.
What Affects Life Span. Habitat -- How you house hermit crabs will greatly affect how long they live. Hermit crabs do best in glass or acrylic aquariums decorated with branches, empty shells and plants. Keep the humidity between 70 percent and 80 percent, and maintain a habitat temperature of 75 to 85 degrees Fahrenheit.