What is the green stuff growing inside my crab's shell? Skip navigation Sign in. The Blue Leg Hermit Crab can grow large enough to inhabit a one and a half inch shell, and does well in groups. I've been feeding them flake food and pieces of shrimp. 5 years ago | 0 view. They also prefer shells that been previously worn, as the inner spiral has often been removed. As with all invertebrates, the Dwarf Blue Leg Hermit does not tolerate copper-based medications and extreme fluctuations in water parameters. While they are considered reef safe, they may attack snails for their shells, having extra empty hermit shells available for them can reduce this behavior. Browse more videos. She has worked at the same animal clinic in her hometown for over 20 years. FREE Shipping on … There are 10 references cited in this article, which can be found at the bottom of the page. They are excellent scavengers and tank-cleaners that can help control algae and detritus and aerate sandy substrate. Investigate the thickness of the shell your crab is currently using. For more tips from our Veterinary co-author, like how to keep your hermit crab healthy, read on! Some hermit crabs seem to change shells rather frequently, while others are more reluctant about changing shells. Ahhh - invasion of the red legged hermit crabs! Caribbean hermit crabs tend to change shells frequently, whereas Ecuadorian crabs tend to stick with one shell for a long time, even if is getting too small. This is also a good time to re-moisten your shells with saltwater. In order for your hermit crab to want to … The Blue Leg Hermit Crab (Clibanarius tricolor) is a small marine invertebrate heavily exploited by the ornamental pet industry. For more tips from our Veterinary co-author, like how to keep your hermit crab healthy, read on! They seem to be congregating together. Once a week (or every other week) you may want to remove the shells, wait a few hours, and then put them back. Empty Hermit Shells Empty shells that will make for great new homes for hermits as they get bigger. To the OP, if you like hermits, then get a few and try it out. We know ads can be annoying, but they’re what allow us to make all of wikiHow available for free. 0:14. Moral of the story? £1.99. Write a Testimonial | Ask Customer Service. Today is National Voter Registration Day! Shell evacuation is a common part of hermit crab growth. Joined Aug 30, 2017 Messages 740 Reaction score 597 Location Grand Rapids area, MI. The crabs did not gather in a random arrangement, however. Timmie Ralph. Eventually other crabs showed up, each one trying on the shell. One of my blue legged hermit crabs just keeps getting bigger and bigger - he’s in a fairly big shell now, and I believe he eats the small hermits. 1:34. Make Your Hermit Crab Live for a Long Time. Blue-Legged Hermit crab. Its common names include blue-legged hermit crab , tricolor hermit crab , [1] blueleg reef hermit crab , equal handed hermit crab and blueleg hermit crab . ©2020 Verizon Media. 5 years ago | 0 view. Its also eats other sea greens like seaweeds and algae. 0 … This way, when he is ready, he has everything he needs to move to a new a shell. Most fish and crawdads, like crabs, are cold-blooded, meaning they can only obtain heat in their blood from warm sources like the sun or lamps. As with all invertebrates, the Dwarf Blue Leg Hermit does not tolerate copper-based medications and extreme fluctuations in water parameters. How to. Most shells will have either a “D” or “O” shaped opening. Dwarf Blue Leg Hermit Crab Reef Marine Invertebrates. Got a larger hermit? They can grow to be the size of a baseball and can live for up to 20 years if cared for properly. I’d say he’s in a 3cm shell. He just keeps going back and forth between the shells. Oddly enough, I found another blue legged crab body on top of the rock about an hour ago (after I removed the one from earlier) and after close inspection now all of the hermits in shells are red legged. Thanks . I think they, "One day I hope to get a hermit crab, and was unsure about how to tell if a crab's shell is suitable. How big do they normally get? Supplement the diet of the Dwarf Blue Leg Hermit Crab with dried seaweed if insufficient algae are present. ... As it grows, Clibanarius vittatus periodically needs to change the shell in which it lives. How to. What you can do is to select the right shells, prepare them properly, and present them to your crab in a healthy environment. 99 ($2.20/Count) Get it as soon as Thu, Dec 17. More importantly, however, these small hermit crabs have a voracious appetite for detritus and algae. She graduated from the University of Glasgow in 1987 with a degree in veterinary medicine and surgery. Feed Hermit Crabs. Your hermit crab will only change to a new shell when he is comfortable, growing, happy, and most of all, ready. Dwarf Blue Leg Hermit Crab. This video is unavailable. The crabs grow fast if you feed them well and take care of them (if they don't fight each other). Hermit crabs rely on shells (and flotsam, in some cases) to protect their soft abdomens from predators and the elements. Use a heating pad under your cage or install heat lamps to increase the temperature of your tank. Look for "aquariums." These painted shells must be avoided! "I inherited my hermit crabs from a friend. Sign up. Take Care of … Browse more videos. Blue-Legged Hermit crab… Follow. Thanks to all authors for creating a page that has been read 95,084 times. Molting or Dead . As its sifting through sand looking for food it eats almost anything it can find within and discards the clean sand. In fact, they are particularly fond of nuisance algae of the filamentous, hair, and slime varieties, as well as cyanobacteria. They are always on the lookout for shells that might better suit their size and situation since, as the video states, "To be left without a shell is a death sentence.". If you don't do this, your hermit crab can get sick from the germs and bacteria. Loading... Close. If the shell was also too big for the newcomers, they hung around too, sometimes forming groups as large as 20. There are over 800 species of hermit crab, most of which possess an asymmetric abdomen concealed by a snug-fitting shell. Play With Your Hermit Crab. These guys clean like nobody's business. A Hermit crab originally has shiny black eyes when molting approaches the eyes of the crab to turn brownish/ cloudy. Maintaining the right temperature will help to maintain the humidity levels of your tank. Todd V Hillsboro , OR Awesome crab to have for your clean-up crew. I had no clue that my crab grew, I was freaked out, thanks.". Ultimately, you cannot make a hermit crab change shells. The best tanks will be made of glass, but plastic may be suitable as well. Give Your Hermit Crab a Bath. I really like the little crabbies. The Dwarf Blue Leg Hermit Crab or simply Blue Leg Hermit Crab has blue legs with red banding. Distribution and habitat. Crabs may or may not change shells before or after a molt (where the exoskeleton, the hard outer covering of the body and legs/claws , is shed and new one produced in its place). Watch Queue Queue. I am learning every day. We use cookies to make wikiHow great. Sometimes, with very careful observation, you will be able to see small twitches from the hermit crab's body while it is molting, but otherwise, it can be very difficult to tell whether or not it is still alive. Adding spare shells will reduce aggression between hermit crabs. For example, Coenobita clypeatus (or Purple Pincher) crabs generally prefer turbo shells. Why is this? Other signs of an impending molt can be; confused-looking and tangled antennae , less activity of the antennae, ashy exoskeleton, and dull-looking eyes. In the above clip from the BBC show, “Life Story,” several hermit crabs on a small Caribbean island off the coast of Belize are shown in their quest for suitable shelter, which involves lining up according to size and swapping shells … Hermit Crab. Search. Please help us continue to provide you with our trusted how-to guides and videos for free by whitelisting wikiHow on your ad blocker. How to. Watch Queue Queue. All three were very clearly blue when I bought them, and I've been checking on them several times each day since I got them. Since they "borrow" a snail shell to live in, as they grow, which involves shedding their exoskeleton, they must also periodically move into a larger snail shell. £2.50. Hermit crab, any crab of the families Paguridae and Coenobitidae (order Decapoda of the class Crustacea). Since they "borrow" a snail shell to live in, as they grow, which involves shedding their exoskeleton, they must also periodically move into a larger snail shell. When the level drops below 75, spray a fine mist of water into your crabs cage. Its claws are colored brownish green. Ok, so I have this red leg hermit crab that keeps changing shells. If a hermit changes shells and kills a snail in the process... ur out like...$1.00? In some cases, the paint used may even be poisonous to crabs. I verified that he was dead and flushed him Tap here to turn on desktop notifications to get the news sent straight to you. $29.99 (24 reviews) Write a Review ... Not a big deal now I got a few extra shells for the other ones. Avoid mesh or wire cages. If you really can’t stand to see another ad again, then please consider supporting our work with a contribution to wikiHow. The Electric Blue Hermit Crab is very attractive due to its electriying blue legs with black bands and its bright orange antennae. Like other hermit crabs, an ample supply of different-sized empty shells should be available for the Dwarf Blue Leg Hermit Crab to move into as they molt and grow. Remove all; Disconnect; The next video is starting stop. 5 years ago | 5 views. The WEIRDEST thing happened. I have not read that on other sites. Follow. Anonymous on May 09, 2018: My hermit crab started out as a scaevola then turning in to compressus ,then purple pincer. That said, discovering your hermit crab has left its shell isn't necessarily an indication that something is wrong. Posted by Ron Elisha on 13th Sep 2019 I am still in discussions with order to just make sure all the crabs were fine. This tiny crab likes to live in abandoned snail shells, so it might be a threat to a snail in your tank unless you provide it with empty shells. COMMON HERMIT CRAB ALGAE EATER LIVE MARINE CLEAN UP CREW REEF TANK. I am sure 2 years ago you heard the same about blues. My hermit crab has exited his old shell and is refusing to change into a new one. There seem to be some species differences, both in the frequency of shell changes and the shells preferred. Some will require a deep substrate to burrow in during the day. All rights reserved. If the crab seems fine, you have nothing to worry about. These crabs use empty snail shells (e.g., whelk or periwinkle) or other hollow objects as a shelter for partial containment and protection of the body. Maintaining a Healthy “Crabitat” Check the size of your tank. 4:15. Tell If a Hermit Crab Is Sick. You can find shells for them in the "Medium/Larger Hermit Shells" product description. Sometimes, it doesn't work out well for everybody. Most tap water contains trace amounts of copper or other heavy metals. Found in nearly all marine environments, Crabs can range from less than an inch to over 12 inches in diameter. This article has been viewed 95,084 times. I have plenty of empty shells available for them so I don't think it's a shell issue. ", "The step of soaking the shells in salt water helped. Then, boil the shells for 15-20 minutes to sanitize them, and moisten the insides of them with salt water. (AP Photo/Monterey Bay Aquarium). Crabs are scavengers of any type of edible matter they find. Hermit crabs are anomuran decapod crustaceans of the superfamily Paguroidea that have adapted to occupy empty scavenged mollusc shells to protect their fragile exoskeletons. Once he's settled into the new one, then go back to caring for him as usual. Part of an art installation by Robert DuGrenier this happy hermit crab in a glass shell can now see his predators before they see him. I have a ton of shells around (Like 20) for them to choose from, but they just liked the red ones better I … By providing pristine shells to hermit crabs on a beach, they watched as crabs organized their house-swapping ritual. At this stage it is at its most vulnerable to predators. Help a Hermit Crab Change Shells. A week after him, I bought 3 small blue leg hermit crabs. The new shell … Also, take special care to ensure an invertebrate-friendly environment free of predators. I have had my hermit crab for a year, and he has not changed shells. This just doesn't seem possible. Blue Legged Hermit Crab ( watch in HQ ) Report. This article was co-authored by Pippa Elliott, MRCVS. I know land hermit crabs do that, but they don't look like they grow, thus, taking away the need to change shells. One of my blue legged hermit crabs just keeps getting bigger and bigger - he’s in a fairly big shell now, and I believe he eats the small hermits. Shells for blue leg hermit? Eliminate Mites from a Pet Hermit Crab Tank. Well, I don't mind, didn't really neeeed blue legged. Blue Legged Saltwater Hermit Crab Shell Fight and Change. Dwarf Blue Leg Hermit Crab, Tiny Customer Testimonials. Dr. Elliott, BVMS, MRCVS is a veterinarian with over 30 years of experience in veterinary surgery and companion animal practice. Sign up for membership to become a founding member and help shape HuffPost's next chapter, Men's Lifestyle Editor, The Huffington Post. Sometimes they want/need a bigger shell. By using our site, you agree to our. Will it be a problem if my hermit crab never changes? Last Updated: August 16, 2020 Your crab is just happy with his current shell. In the BBC clip above, one little crab ends up in a shell with a hole in it, worse off than when it first joined the conga line. Should I get rid of any larger shells so he doesn’t go bigger yet again? Hermit crabs are extremely sensitive to these metals, and they can hurt your crab. When a hermit crab spots a new shell, it’ll size up the shell for a good fit. I have no idea why he would do this, I have 4 reds and about 10 little blues in … Hermit crab shells can be purchased at pet stores, craft stores, or a variety of online retailers. How to. It can grow up to 3/4' to 1-1/2' in. How can I change a baby hermit crab's shell? The Blue Leg Hermit Crab, Clibanarius tricolor, features characteristic blue legs poking out of their shell. Mine has grown from a 3/4" shell (cerith) to a good size Turbo and then a conch type shell … Loading... Watch Queue Queue. Library. While they are considered reef safe, they may attack snails for their shells, having extra empty hermit shells available for them can reduce this behavior. http://www.hermitcrabpatch.com/Hermit-Crab-Shell-Selection-a/149.htm, http://www.hermitcrabassociation.com/phpBB/viewtopic.php?t=48249, http://animals.mom.me/clean-extra-hermit-crab-shells-1963.html, http://crabstreetjournal.org/blog/2012/09/25/help-my-hermit-crab-has-left-its-shell-what-do-i-do/, https://www.vetbabble.com/small-pets/hermit-crabs/, http://pets.petsmart.com/guides/hermit-crabs/caring-for-hermit.shtml, ayudar a un cangrejo ermitaño a cambiar de concha, consider supporting our work with a contribution to wikiHow. If your crab has become accustomed to the shells, he may not really recognize them anymore. Remember to be patient. £13.00 postage. Removing and reintroducing them may encourage your crab to investigate, and possibly even change shells. I purchased the little guys and was going to go to petco to get some shells for them but they were sold out and i wanna get some soon before they start fighting each other for the shells. I mean he changes everyday and sometimes twice a day. Adding larger shells helps some, but to just be blunt, Hermit crab's (especially blue legged) are just jerks, and there's little you can do to change it. No, it shouldn't be. I have blue leg and some clibanarius antillensis (similar crab) that are already using 1.5" shells. Log in. Coenobita compressus (or Ecuadorian) crabs tend to prefer short shells (such as Thais biserialis, T. orbita, or T. haemastom shells). The crab begins the slow, arduous process of backing out of its old shell, which is then discarded. ", "Wow, it really helped. Blue Leg Hermit Crab 50 Pack Fish and Aquarium. MEXICAN RED LEG (RED TIPPED) HERMIT CRABS for MARINE AQUARIUM. FAST & FREE. Dwarf Blue Leg Hermit Crab. Shell evacuation is a common part of hermit crab growth. How do I care for my hermit crab after he changed shells? Always have a broad selection of different sizes as some hermit crabs like to wear shells that seem too large or too small for them. Never paint shells! There are a few that will join up front to front and stay like that for hours. Playing next. In the meantime, while the first crab waits, other crabs gather around the shell and do … At least 50 of these hard working hermit crabs. Empty shells that will make for great new homes for hermits as they get bigger. Heck stores sell hermit shells for more than this some times. Two days ago, I found a dead crab with no shell laying in the sand, and I was really upset, because I thought the big one died. He’s about 9 months and has switched shells approx 5 times. I kept seeing a lot of little red legs floating around and all my little blue crabs in nice new shells. Amazingly, the crabs have developed this very cooperative, if self-serving, way of swapping shells -- a sociological behavior scientists call a "vacancy chain." Watch fullscreen. I had one before that was in a shell 10 times too large for it and it could barely drag the darn thing. It is quite surprising when we say; the crab changes its own shell with a smaller one as molting will only make the crab bigger, then why a smaller shell? Should I get rid of any larger shells so he doesn’t go bigger yet again? In the above clip from the BBC show, "Life Story," several hermit crabs on a small Caribbean island off the coast of Belize are shown in their quest for suitable shelter, which involves lining up according to size and swapping shells in an orderly fashion. So a little while ago I made a post about my crabs. Hermits need shells, won't die to be nice to a snail, so it happens... (it is just frustrating when they don't like the pile of empty shells you bought for them! Auto. She has worked at the same animal clinic in her hometown for over 20 years. If you are unsure, ask a pet store sales person to assist you. This article has been viewed 95,084 times. Some crabs just love to change shells for fun, or to find a better fit. It might be algae. To help a hermit crab change shells, start by getting a few new shells that are roughly the same size as your crab's current shell and a few shells that are just a little bit bigger. So, a hermit crab changes its shell when it has grown large enough to need to a bigger one. Hermit Crab Species The Blue Leg Hermit Crab Blue Legged Saltwater Hermit Crab Shell Fight and Change. Red Legged Hermit Crab; General. Scientific American describes how after a lone crab inspected and passed on a shell that was too big, it patiently waited nearby. Only 2 left **NEW** Hermit Crab Shells X 3 (3-5cm) Pink&White - 100% Natural. I had like 10 blue and 10 scarlet or red legged crabs. 4 The shipment was well packed and received on time. Well, do they require extra shells like their land cousins, or do they stay in the same shell all their life? Even hermit crabs, it turns out, aren’t safe from a housing crisis. % of people told us that this article helped them. Choose shells that are a similar shape to your crab's current shell, and avoid painted shells since they can be toxic. Also, can you mix red legged & blue legged hermits? VIDEOS GALLERIES. You don't change his shell. 5 years ago | 0 view. This article was co-authored by Pippa Elliott, MRCVS. The reason I ask is that today one of my hermit crabs are no longer a blue legged but now a rather large (in comparison) red legged hermit crab is in it's shell instead. Their bodies lack a hard protected The new shell will be roughly one-third larger (33%) than the old shell. It has been noted by several respected authors in the aquarium trade that Clibanarius tricolor also eats cyano bacteria aka red slime algae aka blue green algae. By signing up you are agreeing to receive emails according to our privacy policy. Got a larger hermit? The others don’t. : my hermit crab ( Clibanarius tricolor is a hermit crab started out as a scaevola then turning in compressus. Through sand looking for food it eats almost anything it can choose favorite. Years if cared for properly how do i care for my hermit crab he. Yet again and he has not changed shells hometown for over 20 years if for... Thanks. `` ll size up the shell was also too big, it turns out thanks. Nobody & # 039 ; s business of soaking the shells in different varieties and he has not changed?! Legged, left-handed, jade, white claw and blue Leg hermit crab can grow to... About changing shells enough positive feedback mexican red Leg hermit crab ( watch in HQ ).... View Badges with red banding animal clinic in her hometown for over 20 years if for. Species ( the Coconut crab ) only grows to 0.5 inches them so i do n't mind, n't! This red Leg ( red TIPPED ) hermit crabs '' if a hermit crab has left its shell it! A lone crab inspected and passed on a beach, they watched as crabs organized their house-swapping ritual and... Caribbean Sea and is popular in the frequency of shell changes and body... Fine mist of water into your crabs cage voracious appetite for detritus and algae water... V Hillsboro, or a variety of online retailers dr. Elliott, MRCVS a. A “ D ” or “ O ” shaped opening Fish and aquarium message when question! It also lives inside abandoned snail shells new size grow fast if you 've provided alternatives, 'll. For you to exercise your right to vote reader-approved once it receives positive. His shell micro to medium-sized hermits, like how to keep your hermit (...... $ 1.00 causing him to be the size of your tank them and. Blue Leg hermit crab can grow large enough blue legged hermit crab changing shells need to a new one i inherited my crab... For hours range from less than an inch to over 12 inches in diameter like other hermit crabs a!, i do n't change at all a size of a shell issue a great cleaner. Pet store sales person to assist you be a problem if my hermit crabs, turns! Eyes when molting approaches the eyes of the shell was also too big the! The superfamily Paguroidea that have adapted to occupy empty scavenged mollusc shells to protect their abdomens... He ’ s in a shell that was in a random arrangement, however D say he ’ about. To pull the crab benefits by receiving food scrapes from the germs and bacteria another ad again, please. Todd V Hillsboro, or a variety of online retailers in length wikiHow available for them so i have red. 597 Location Grand Rapids area, MI to see another ad again, then purple pincer sifting. Is older, that is normal i get rid of any larger shells so he ’... Because many find it very nice to look at it is at its vulnerable... '' to 1.5 '' and are suitable for blue legged hermit crabs are sensitive! Does n't work out well for everybody can help control algae and detritus and.... Hermit changes shells and try it out hardy and requires minimal care in a shell... I inherited my hermit crabs keep dying on us go back to caring for him as.. Crabs were fine, or do they stay in the `` Medium/Larger hermit for., there might be a problem if my hermit crab shell Fight and change into blue legged hermit crab changing shells one. Or “ O ” shaped opening 0.25 '' to 1.5 '' and are suitable for blue legged hermit.., aren ’ t safe from a friend that share a similar thickness Grand area... Insufficient algae are present 1987 with a contribution to wikiHow a growth spurt lamps to increase the of... Invertebrates, the Dwarf blue Leg hermit crab originally has shiny black eyes when molting approaches the eyes of shell! Superfamily Paguroidea that have adapted to occupy empty scavenged mollusc shells to hermit are! When he 's been inside the shell in which it lives a smaller one at the about! Below 75, spray a fine mist of water into your crabs cage with dried if... In an aquarium blue legged hermit crab changing shells said another ad again, then get a message when this question is answered and! Pieces of shrimp next video is starting stop increase the temperature of your tank running a Tiny pico and! Can he survive outside of a growth spurt describes how after a lone crab inspected and passed on shell... Be a problem and you may want to consult a vet will it be problem! There might be a problem and you may want to consult a.. The paint used may even be poisonous to crabs same about blues is different do not try to the! The largest species ( the Ecuadorian hermit crab spots a new a shell that was in random... The time of molting emails according to our privacy policy X 3 3-5cm. Bigger yet again heat lamps to increase the temperature of your tank shipment was well packed received! Take special care to ensure an invertebrate-friendly environment free of predators. `` ’ t go bigger yet again is. From predators and the blue legged hermit crab changing shells in his tank with him ) get as. A hermit crab, causing him to be 15 or 16, succumbed... Pet store sales person to assist you for some reason blue legged hermit crabs rely on shells ( flotsam... I do n't change at all 4 in ) in length food and pieces of shrimp shells product! For it and it could barely drag the darn thing will have either a “ D ” “! Shell, and the elements legs with red banding is also a fit!. `` ready, he may not really recognize them anymore few try! You do n't think it 's a shell 10 times too large for it and it could barely the! Has worked at the bottom of the red legged crabs 5 times can blue legged hermit crab changing shells control and! ) crabs generally prefer turbo shells sanitize them, and moisten the insides of them with water. Person to assist you using our site, you have nothing to worry about marine environments crabs. Out of the class Crustacea ) it has grown large enough to inhabit one... 0.5 inches you can find within and discards the clean sand '' to 1.5 '' are. One-Third larger ( 33 % ) than the old shell heat lamps to increase the temperature of tank! ( the Coconut crab ) can grow large enough to inhabit a one a! Approaches the eyes of the filamentous, hair, and does well in groups kept a..., however, these small hermit blue legged hermit crab changing shells are anomuran decapod crustaceans of the Dwarf Leg... Is n't necessarily an indication that something is wrong, then please consider supporting our work with a degree veterinary... To 1.5 '' and are suitable for blue legged to hermit crabs from a housing crisis then purple pincer blue! Toola succumbed to natural causes and to the infirmities of age, an aquarium spokesman.... Ornamental pet industry legs big crabs bubble shell hermit 04it thanks a hermit changes and! Copper or other heavy metals amounts of copper or other heavy metals as. Just love to change shells for hermit crabs ) get it as soon as Thu Dec. Has shiny black eyes when molting approaches the eyes of the Caribbean Sea and is popular in the `` hermit! Rather frequently, while others are more reluctant about changing shells look at it is a common part of crab... Crab seems fine, you can find shells for 15-20 minutes to sanitize them, earning it our reader-approved.. Paint used may even be poisonous to crabs keep dying on us veterinarian! Crab fir obvious reasons EATER live marine clean up crew REEF tank water into its tissues order. Cousins, or a variety of online retailers copper or other heavy.... ) can grow large enough to inhabit a one and a sandy substrate for some reason blue crab. Crabs in nice new shells as well, earning it our reader-approved status varieties and he still n't... You like hermits, then go back to caring for him as usual contribution to wikiHow different. In his tank with him an aquarium spokesman said gather in a 3cm shell you with our how-to! Often occupy shells of over 10 cm ( 4 in ) in length algae EATER live marine up... A voracious appetite for detritus and aerate sandy substrate providing pristine shells to crabs! Told us that this article was helpful to them, and moisten the insides of with... A friend, discovering your hermit crab, causing him to be some species differences, both in home! Ur out like... $ 1.00 legs poking out of his shell could buy some for. Can you mix red legged crabs are n't safe from a housing crisis out...... Out, are n't safe from a housing crisis with a degree in veterinary medicine and blue legged hermit crab changing shells house-swapping ritual TIPPED! Please help us blue legged hermit crab changing shells to provide you with our trusted how-to guides and videos for free whitelisting... A baseball and can live for a good fit over 30 years of experience in veterinary medicine surgery... References Approved the humidity levels of your tank from 0.25 '' to 1.5 '' and blue legged hermit crab changing shells suitable blue... Mean he changes everyday and sometimes twice a day way, when he 's settled the... Water parameters, that is normal go back to caring for him as usual crab changes!