The annelids (/ ˈænəlɪdz /), also known as the segmented worms, are animals that comprise the phylum Annelida (/ əˈnɛlɪdə /; from Latin anellus 'little ring'). [4][a] The phylum contains over …

Dec 16, 2025 · annelid, any member of a phylum of invertebrate animals that are characterized by the possession of a body cavity (or coelom), movable bristles (or setae), and a body divided …

Nov 5, 2025 · Annelids, commonly known as segmented worms, are soft-bodied, bilaterally symmetrical invertebrates of the phylum Annelida. They constitute the earthworms, leeches, …

Members of the Phylum Annelida can be found throughout the world, in marine, freshwater, and terrestrial environments. Ecologically, they range from passive filter feeders to voracious and …

Jun 23, 2025 · The phylum Annelida represents a vast group of invertebrate animals, commonly known as segmented worms. With over 22,000 known species, these creatures have adapted …

Aug 3, 2023 · About 8,700 known species of Annelida are divided into four main classes, primarily on the basis of presence and absence of parapodia, setae, metameres, and other …

Phylum Annelida includes segmented worms. These animals are found in marine, terrestrial, and freshwater habitats, but a presence of water or humidity is a critical factor for their survival, …

Phylum Annelida comprises the true, segmented worms. These animals are found in marine, terrestrial, and freshwater habitats, but the presence of water or humidity is a critical factor for …

Segmented worms make up the Phylum Annelida. The phylum includes earthworms and their relatives, leeches, and a large number of mostly marine worms known as polychaetes.

Dec 16, 2025 · The body of an annelid is often described as a tube within a tube. The inner tube, or digestive tract, is separated from the outer tube, or body wall, by the coelom. The head …