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Carcinisation (American English: carcinization) is a form of convergent evolution in which non-crab crustaceans evolve a crab -like body plan. The term was introduced into evolutionary biology by L. A. Borradaile, who described it as "the many attempts of Nature to evolve a crab". [2]
The following guidelines are advised by Boeing for a crosswind landing. These guidelines assume steady wind (no gusting). These winds are measured at 10 metres (33 ft) tower height for a runway 45 metres (148 ft) in width. Basically, there are 3 landing techniques which may be used to correct for cross winds: de-crab, crab, and sideslip.
Lybia tessellata is a species of small crab in the family Xanthidae.It is found in shallow parts of the tropical Indo-Pacific Ocean. Like other members of the genus Lybia, it is commonly known as the pom-pom crab, cheerleader crab, or boxer crab because of its habit of carrying a sea anemone around in each of its claws, these resembling pom-poms or boxing gloves.
The fiddler crab or calling crab may be any of more than one hundred species of semiterrestrial marine crabs in the family Ocypodidae, [2] well known for their sexually dimorphic claws; the males' major claw is much larger than the minor claw, while the females' claws are both the same size. [3] A smaller number of ghost crab and mangrove crab ...
Anomura (sometimes Anomala) is a group of decapod crustaceans, including hermit crabs and others. Although the names of many anomurans include the word crab, all true crabs are in the sister group to the Anomura, the Brachyura (the two groups together form the clade Meiura).
Hoplophrys oatesi is a very colorful crab that grows from 1.5 to 2 cm. It lives on various species of soft coral in the genus Dendronephthya. It camouflages itself by mimicking the colours of the polyps among which it hides. It adds further camouflage by attaching polyps to its carapace. Colours vary depending on the colour of the coral, and ...
Crab fisheries are fisheries which capture or farm crabs. True crabs make up 20% of all crustaceans caught and farmed worldwide, with about 1.4 million tonnes being consumed annually. The horse crab, Portunus trituberculatus, accounts for one quarter of that total. Other important species include flower crabs (Portunus pelagicus), snow crabs ...
A Caribbean hermit crab in the Dry Tortugas National Park, Florida. The Caribbean hermit crab (Coenobita clypeatus), also known as the soldier crab, [2] West Atlantic crab, tree crab, or purple pincher (due to the distinctive purple claw), is a species of land hermit crab native to the west Atlantic, Belize, southern Florida, [3] Venezuela, and the West Indies.