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Calcinus seurati is known for its vibrant appearance, with shells often decorated with patterns like spots and bands. [3] Walking legs banded black and white, claws light or dark gray. [4] This species is a small to medium sized hermit, growing up to 2 in (51 mm) in size. It is omnivorous, feeding on a variety of plant and animal matter.
Hermit crabs also require both salt water and freshwater sources deep enough for the crab to fully submerge. All water should be treated to remove chemicals, and saltwater should be prepared using a marine grade salt mix. Further, like many pets, hermit crabs need enrichment and need opportunities for hiding and climbing.
Pagurus samuelis is a small hermit crab, at up to a total length of 40 mm (1.6 in) and a carapace width of up to 19 mm (0.75 in). [2] The base colour of the exoskeleton is brown or green, [2] but the antennae are red, and adults have bright blue bands near the tips of their legs. [3] In smaller individuals, the bands may be white. [2]
Calcinus laurentae is a species of left-handed hermit crab in the family Diogenidae. [1] The common name for Calcinus laurentae is Laurent's Hermit Crab [ 2 ] or Redleg calcinus. [ 3 ] Calcinus laurentae are native to Hawaii [ 4 ] and the Hawaiian word for hermit crab is unauna.
This is an aggressive hermit crab species which is prepared to fight for empty shells or other resources. The size and brightness of the white patch on the left chela seems to be a status symbol and helps its bearer in agonistic interactions. [2] As with other decapods, the female carries the eggs tucked under her abdomen.
Like other hermit crabs, D. pugilator conceals its soft abdomen inside an empty gastropod mollusc shell; the abdomen is twisted to fit the contours of the shell. The carapace protects the anterior part of the crab and can be up to 11 mm (0.43 in) long; it is squarish in shape, has triangular projections along the front edge, and is clad with hairs on the front two corners.
In New Zealand there are more than 60 known species of hermit crab, [5] predominantly found along the coastline in tidal rock pools and estuaries. [10] Pagurus novizealandiae is mainly found in the intertidal zones right throughout both the North and South Island, however this species is mostly found in the South Island, or on the Auckland Islands 465 km south-east of New Zealand.
The red reef hermit crab is a scavenger, feeding on animal and vegetable detritus. The sexes are separate in this species and it breeds throughout the year. The eggs are orange and hatch into planktonic larvae. When these settle on the seabed, the juvenile hermit crabs need to search for a suitable shell to occupy.