page_title: Worm
hierarchical_section_title: Worm
caption_attribution_description: Regenwurm mit Clitellum - (sattelförmige Verdickung im vorderen Drittel).Das Sekret der Clitellum-Drüsen dient u. a. zur Bildung dieses Ei-Kokons. Français&#160;: Ver de terre (Oligochaeta, Lumbricina) Svenska: Daggmask (Lumbricus spec.) Русский: Дождевой червь (род Лумбрикус)
context_page_description: A worm is a type of animal that usually has no arms or legs and has a cylinder-like body. All worms are invertebrates, meaning that they do not have a backbone. Worms can come in many different sizes. Many worm species are so small that they can't be seen with the human eye, while the bootlace worm has been known to grow up to nearly 60 meters. One of the most well-known types of worms are earthworms.
  There are several subcategories of worms, many of which are very different than others. Annelids, nematodes, platyhelminthes, ribbon worms, arrow worms, priapulid worms, and some insect larvae are all of animals that are often called worms.
context_section_description: A worm is a type of animal that usually has no arms or legs and has a cylinder-like body. All worms are invertebrates, meaning that they do not have a backbone. Worms can come in many different sizes. Many worm species are so small that they can't be seen with the human eye, while the bootlace worm has been known to grow up to nearly 60 meters (almost 200 feet). One of the most well-known types of worms are earthworms.
  There are several subcategories of worms, many of which are very different than others. Annelids, nematodes, platyhelminthes, ribbon worms, arrow worms, priapulid worms, and some insect larvae are all of animals that are often called worms.
caption: Lumbricus terrestris, an earthworm
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