其他飼養基本配備:

陸寄居蟹雖然棲息在陸地上，但牠們和所有生物都一樣，要飲用水來維持生命。在飼養缸內放置水盆還可以幫助保持飼養缸的濕度，使牠們有足夠的濕度呼吸。

跟據< Water uptake in terrestrial hermit crabs: amorpho-functional analysis >論文提到，陸寄居蟹會利用第三顎足的剛毛接觸水或濕潤的沙，把水帶到口裏。

短腕陸寄居蟹 Coenobita brevimanus (Land hermit crab) drinking flesh water

參考過外國的書籍和網站(以下幾段英文資料)，雖然有些物種的陸寄居蟹棲息在海灘附近，有些物種棲息在紅樹森或近內陸甚至叢森地區，但牠們都要攝取鹽分，只是鹽分攝取會有差別。

而且有說海水裏的礦物質補充會使牠們的甲殼更堅硬和增加脫皮的成功率，所以在飼養下，除了淡水，大家也要提供海水，讓牠們自行選擇攝取那一種，調節適當的鹽分。

淡水和海水，缺一不可!

Although there are relatively few species of Coenobita, individuals are numerous in tropical and subtropical maritime regions particularly supralittoral areas and small islands, although some penetrate further inland. Certain species are restricted to beaches (e.g. C. perlatus (H. Milne Edwards, 1837), C. scaevola (Förskal 1775), C. spinosus (H. Milne Edwards, 1837), C. cavipes (Stimpson, 1838) while several other species may penetrate long distances inland, e.g. C. clypeatus (Herbst, 1791) on Curaçao, C. rubescens (Greeff) and C. brevimanus (Dana, 1852) in rainforest, C. compressus (H. Milne Edwards) (de Wilde; 1973; Burggren and McMahon, 1988). Coenobita rugosus (H. Milne Edwards, 1837) may live on the beach or penetrate inland in situations where fresh water is available (Yamaguchi, 1938; Vannini, 1976).

Greenaway (2003 p. 13)

Terrestrial adaptations in the Anomura (Crustacea: Decapoda)

Beach-dwelling Land Hermit Crabs Some hermit crabs live on or close to beaches and would have access to seawater and a diet high in salt. In captivity they will need access to sea water. You will often find hermit crabs which have been denied sea salt water solutions spending a lot of time in the ocean water dish once you get them home. Within the United States C. perlatus and C. cavipes are available in some pet stores and mall carts. According to Peter Greenaway, these species are beach-dwelling land hermit crabs and would require access to sea water to survive. "Certain species are restricted to beaches (e.g. C. perlatus (H. Milne Edwards, 1837), C. scaevola (Förskal 1775), C. spinosus (H. Milne Edwards, 1837), C. cavipes (Stimpson, 1838)... Beach-dwelling coenobitids drink seawater or extract it from damp sand and often immerse themselves to flush the shell.. " Greenaway (2003 p. 13-16)

Other land hermit crabs. Despite living away from beach areas most hermit crabs will drink the sea water from time to time or access salt through their diet. You may find your Carribean (Purple Pincer aka C. clypeatus) hermit crabs drinking the sea water. While they may not have ready access to seawater in the wild they do drink it while in captivity, and there is often a link between excessive drinking of sea water and an impending moult."Coenobita spp. that live away from the beach do not usually have access to seawater and indeed these species prefer dilute water unless they are depleted of salt (de Wilde, 1973). " Greenaway (2003 p. 16)