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The Japanese spider crab (Macrocheira kaempferi) is a species of marine crab and is the biggest one that lives in the waters around Japan. At around 3.7 meters, it has the largest leg-span of any arthropod .
Japanese spider crab. The largest arthropod known to have existed is the eurypterid (sea scorpion) Jaekelopterus, reaching up to 2.5 m (8.2 ft) in body length, followed by the millipede relative Arthropleura at around 2.1 m (6.9 ft) in length. [258]
Macrocheira is a genus of crab in the superfamily Majoidea. [1] It contains the Japanese spider crab ( Macrocheira kaempferi ) as well as an extinct species, Macrocheira longirostra . [ 2 ]
Japanese spider crab (Macrocheira kaempferi), the largest living species of crab, found on the bottom of the Pacific Ocean. Libinia emarginata, the portly spider crab, a species of crab found in estuarine habitats on the east coast of North America.
Crabs vary in size from the pea crab, a few millimeters wide, to the Japanese spider crab, with a leg span up to 4 m (13 ft). [6] Several other groups of crustaceans with similar appearances – such as king crabs and porcelain crabs – are not true crabs, but have evolved features similar to true crabs through a process known as carcinisation .
Majidae is a family of crabs, comprising around 200 marine species inside 52 genera, with a carapace that is longer than it is broad, and which forms a point at the front. The legs can be very long in some species, leading to the name "spider crab".
A Giant crab is a type of crustacean. Giant crab may refer to: Japanese spider crab (Macrocheira kaempferi), possesses the longest leg span of any marine crab species alive; Coconut crab (Birgus latro), the largest terrestrial invertebrate species alive; Tasmanian giant crab (Pseudocarcinus gigas), another large crab species
Achaeus japonicus, sometimes known as the orang-utan crab, [2] [3] is a crab of the family Inachidae (spider crabs or decorator crabs) which can be observed in tropical waters of the central Indo-Pacific.