All of them are decapod crustaceans, which means that are ten legged and have an exoskeleton. Marine hermit crabs live underwater and can sometimes be found in tidepools. Crabs, which spend a long time on land, store water under the armor or they develop organs like lungs. The vast majority of them live in salt water, about 850 species live in fresh water. Hermit crabs are one of the most fascinating pets that people are learning to raise and breed in captivity. There have been a lot of successful attempts, which have encouraged others to do the same by gathering their own pair of hermit crab and raising them in artificial homes inside tanks and aquariums. Hermit crab origins vary depending on the species of hermit crab. There is a lot of inaccurate information about hermit crabs, and it doesn't help that they are widely sold as a temporary, easy pet. The answer to the question where do the hermit crabs live has many dimensions. Kept properly, the land hermit crab can live for 20+ years in captivity but will live only a few months if certain care requirements are ignored. The habitat of a hermit crab is a special question because the hermit crabs have three levels of habitat. They are highly adaptable but they do need to be where they can find shells. This time, you should remove the hermit crabs from the habitat and thoroughly clean the walls of the tank, filtering sand for debris and sanitizing if necessary. They use pools and crevices of sea water to wet their gills and the interiors of their shells, and they reproduce and spend their early stages in water. Hermit crabs are omnivores and natural scavengers, so their diet isn’t overly picky. It’s a good idea to do heavy duty habitat cleaning about twice per year dependent on the amount of hermit crabs you own. Hermit crabs distributed in the Indo-Pacific, often found in the Marshall Islands and Hawaii Islands, as well as off the coast of Australia. Hermit crabs are decapod crustaceans of the superfamily Paguroidea, not closely related to true crabs.. This is why you will mainly find them living around the oceans. Hermit Crab Distribution You will find the hermit crab living in a variety of locations. Hermit crab owners refer to their pets fondly as "Hermies." Most hermit crabs salvage empty seashells to shelter and protect their soft abdomens, from which they derive the name ‘hermit’. Experienced crab owners offer the following care tips. Hermit crabs should have access to food within their habitat, but any fresh or moist food should be monitored for signs of mold and replaced daily. Land hermit crabs do not live in the water but need fresh and salt water to survive. Land hermit crabs live close to the shoreline and must have access to both land and water. The first level is the greater habitat of the natural habitat of the hermit crabs. There are about five hundred known species of hermit crabs in the world, most of which are aquatic. Caring for a Crab. Sometimes they are also referred to as crabs, although they are not true crabs, which are in the family called Brachyura. Other hermit crab species are entirely aquatic. To start, hermit crabs need to be kept at around 80 degrees with 80 percent humidity, which is impossible in the wire cages they're often sold in. You can expect your hermit crabs to enjoy fruits, vegetables, insects, and unseasoned pieces of meat. So why do most people have such a different experience with a hermit crab? Underdeveloped gills in them almost do not work and with constant immersion in water such individuals die.