what are crabs
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-  Crabs  is the common term for lice found in the pubic hair of humans. Crabs is a parasite infection medically known as Pediculosis pubis or pubic lice. Barely the size of a pinhead, lice are organisms that live only with the help of another organism, called a host.
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- Crabs and their close relatives have 10 legs, arranged in five pairs. Some of their legs are used for walking, while others are used for swimming or defense.
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Arthropods Arthropods. Arthropods are invertebrate animals that have an external, jointed skeleton usually known as a carapace. The phylum includes insects, crustaceans, centipedes, millipedes, spiders, scorpions and horseshoe crabs.rthropods are invertebrate animals that have an external, jointed skeleton usually known as a carapace.
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Crab (Kekara) Crab is a delicacy for all meat lovers for the sweetness and softness of meat. There is however a distinct variation in the meat of a male crab and female crab. While some species of crabs are eaten as a whole, few species are consumed for their claws and legs.
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Snow Crab Snow crab are crustaceans with a flat body and five pairs of spider-like legs (the front pair are claws). As they grow, the hard outer shell is periodically shed in a process called molting.
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Crab Facts For Kids | Top 10 Crab Facts Amazing Crab Facts For Kids. 1  Crabs generally live in all the waters of the world and on land. 2  They fancy their living in tropical regions in particular. 3  There is a considerable size variation from few millimeters to 4 meters (13 feet). 4  Crabs are very fond of freshwater where they spend most of their time.
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Hermit crab The first group is the marine hermit crabs (with a single species, Clibanarius fonticola, in freshwater). These crabs spend most of their life underwater as aquatic animals, live in varying depths of saltwater from shallow reefs and shorelines to deep sea bottoms and rarely leave for land.
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- Crabs, lobsters, spiders, insects, centipedes, and millipedes these creatures all belong to the phylum Arthropoda, the most successful group of animals on Earth. Indeed, arthropods far outnumber all other types of animals combined, with an estimated 1 million species.
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Crabs Crabs are parasites. Crabs are often referred to as pubic lice and are not to be confused with body lice. The scientific name for crabs is Pediculus pubis. Crabs need blood to survive, but they can live up to 24 hours off a human body. Crabs have three very distinct phases; egg, nit (egg or young louse), and adult louse. The louse is the stage of the parasite that causes itching. Louse is the singular for lice (like mouse and mice).
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What do crabs eat? What do crabs eat that humans could feed them? Crabs are 'carrion eaters', meaning they feast on what's left after a larger predator has its fill. Typically, they munch on pieces of dead fish or whatever else happens to wi…nd up on the bay or ocean bottom, since that's where they live. They are detrivores.
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How Many Legs Does a Crab Have? Crabs are crustaceans of the infraorder Brachyura, and they make up about half of all decapods, or 10-footed creatures. There are 6,793 species of crab. They are a diverse group, ranging in size from the tiny pea crab, which is less than 1 inch across, to the Japanese spider crab, which has a leg span of up to 13 feet.
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Crab recipes There are more than 4000 species crab, a crustacean notable for its sideways walk, claws and armoured shell. Crab claws yield sweet, dense white meat similar to lobster meat, while the flesh from under the hard upper shell is soft, rich and brown. Crab liver is considered a delicacy. Male crabs tend to have larger claws and more white meat. However, the females sometimes contain coral - a flavoursome red roe.
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Download the Crab Facts & Worksheets 1 Crabs are invertebrates (animals without a backbone). Their exoskeleton protects them from predators and provides support for their bodies.  They have flattened bodies, two feeler antennae, and two eyes located on the end of stalks, and they are 10-legged animals that walk sideways.
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All species The coconut crab (Birgus latro) is a type of land hermit crab with a spectacular appearance and intriguing biology. Able to grow to relatively gigantic proportions, the coconut crab is probably the largest terrestrial arthropod in the world .
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- Horseshoe crab. Horseshoe crabs are marine arthropods of the family Limulidae and order Xiphosura or Xiphosurida, that live primarily in and around shallow ocean waters on soft sandy or muddy bottoms. They occasionally come onto shore to mate. They are commonly used as bait and in fertilizer.orseshoe crabs are used as bait to fish for eels (mostly in the United States) and whelk. However, fishing with horseshoe crab is temporarily forbidden in New Jersey (moratorium on harvesting) and restricted to only males in Delaware.
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- Hermit crabs are decapod crustaceans of the superfamily Paguroidea. They are not closely related to true crabs. Hermit crabs are quite commonly seen in the intertidal zone: fo…r example, in tide pools. a hermit crab or a hermie is a type of crab only smaller. 10 people found this useful.
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- Horseshoe crabs belong to the phylum of Arthropods, which consists of animals having an articulated body and limbs. The three major classes of Arthropods are Insects, Arachnids and Crustaceans.
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- Horseshoe crabs (Limulidae) are currently represented by four species including Limulus polyphemus (1), which is found along the eastern coast of North and Central America, and three Indo-Pacific species, Tachypleus gigas (4), Tachypleus tridentatus (3) and Carcinoscorpius rotundicauda (2).
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crab n., v. crabbed, crab•bing. n. 1. any decapod crustacean of the suborder Brachyura, having a wide and flattened body, with a small abdomen folded under the thorax. 2. any of various crablike arthropods, as the horseshoe crab. 3. (cap.) cancer (def. 3).
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Blue Crab ( Callinectes  sapidus) Description. Crabs are crustaceans with five pairs of legs. The first pair is modified as pinchers and the last four pairs are walking legs. The blue crab's carapace (or shell) is about 7 inches (17.8 cm) wide and 4 inches (10.2 cm) long. It weighs 1 to 2 pounds (0.45 to 0.9 kg) when fully grown. The back of the blue crab is dark or brownish green and is drawn out on each side into a large spine.
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- Yes, as a vertebra is a piece of a backbone. As such invertebrate  means an organism that does not have a spinal column or back bone.  Crabs have an exoskeleton (their exter…nal shell serves as a  skeleton) instead of a back bone, they are therefore considered  invertebrates.   Crabs have no bones, including no vertebrae (backbones).
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Story: Crabs, crayfish and other crustaceans Crabs and crayfish are crustaceans, a subdivision of arthropods – the large group of animals without backbones (invertebrates) that includes insects, spiders, mites, scorpions and springtails.
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What Do Crabs Eat in the Ocean? More than 4,000 species of crabs exist in the world, most of which live the bulk of their lives on the bottom of the ocean floor where the carnivorous creatures eat just about any type of prey they can catch.
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Crabs 1 Crabs are small parasites that resemble crabs you see on the beach. 2  They may be whitish-gray or rust colored. 3  A person may also notice crab eggs, or nits, attached to the base of the hair (close to where it comes out of your body). 4  Nits are small, oval-shaped and pearl-like in color.
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Arthropod Arthropods (Greek language for joint-legged) are a large group of invertebrate animals. Insects, spiders, crabs, shrimp, millipedes, and centipedes are all arthropods. In the scientific classification, all arthropods are members of the phylum Arthropoda. Arthropods have segmented body, an exoskeleton and legs with joints. Most arthropods live on land, but some live in water.
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- Crabs and crayfish are crustaceans, a subdivision of arthropods-the large group of animals without backbones (invertebrates) that includes insects, spiders, mites, scorpions … and springtails. Arthropods have jointed legs and a hard outer shell that acts as a skeleton. 10 people found this useful.oaches are insects, not crustaceans. Crustaceans are mostly aquatic animals, although some (like the sow bug) do live in damp land environments. Roaches do not need an aquati … c or damp environment and they flourish in dry areas including deserts.