1. Halimus truncatipes – Found in low intertidal, rock reefs of Australia. [Davie, P.J.F. (2002) Zoological Catalogue of Australia, CSIRO, Volume 19, p306]

2. Hyas araneus , or the Great Spider Crab, can reach a length of 11-12 cm and is usually brown. This species has characteristic hooks on both sides of the head to attach seaweed as camouflage. The great spider crab is found from just below the tidal zone and down towards 350 metres. It is not very choosy when picking its habitat. You may find in on all kinds of substrate and on current exposed locations as well as in calm waters. It is widespread in the North-East Atlantic, including Iceland, Norway, the British Isles and the coasts of central Europe. [seawater]

3. Labelled as Ibacus antarcticus (H. Milne Edwards, 1837), I believe this is the Sculptured Mitten Lobster ‘Parribacus antarcticus’ (Lund, 1793), [MSIP].

Kingdom Animalia,Phylum Arthropoda,Class Crustacea,Order Decapoda,Suborder Macrura Reptantia,Superfamily Palinuroidea,Family Scyllaridae,Subfamily Ibacinae,Genus Parribacus,Species Parribacus antarcticus

Sculptured Mitten Lobsters have been taken at depths from 0 to 20 m; in coral or stone reefs with a sandy bottom. The species is nocturnal and in the daytime hides in crevices, sometimes in small groups. It varies in lengths between 2 and 9 cm, with a maximum total length of about 20 cm. This species is known for its excuisite taste, sometimes preferred to any other lobster, but due to its small abdomen and flat shell is isn’t considered very suitable for commercial fishing. [MSIP]

 

4. Liocarcinus marmoreus (ignore name on photo), common name the Marbled Swimming Crab, is found in Britain and Ireland. It prefers fine sands and gravel on the lower shore and sublittoral. It is a distinctive crab with a variable colour pattern of reddish-yellow and light brown. The body is smooth and grows up to 35 mm long with three small, similar sized teeth between the eyes. It is host to the parasitic barnacle Sacculina carcini in some areas. [MarLIN]

5. Ilia nucleus (Linnaeus, 1758), known in GB as the Pebble Crab,  is found in the atlantic, from Spain to Senegal. The crab has a smooth, almost spherical body which is up to 3cm diameter. The pair of pliers is twice the size of the body, and are long and thin. This species usually appears a carrot orange colour, but can turn black or beige, or even appear transparent in younger individuals. It is usually found in muddy or sandy-mud waters at depths from 5 -160m. It is a nocturnal crab which remains buried in the sand during the day. [Translated from Spanish website:  DORIS]

6. Leucosia unidentata (De Haan, 1841) are commonly found in Japan, but have been found off coasts elsewhere, at depths from 30-100m.  The Leucosia unidentata is charactersed by the palms of its chelipeds, which are defined by two parallel rows of granules along the inner border. [MSIP]