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Phylum Annelida

an' nel i da, a group of invertebrates characterized by having a segmented body

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About the Phylum Annelida
About the Phylum Annelida
The word "Annelida" comes from the Latin annelus, or ringed. Earthworms and leeches, plus many other kinds of segmented worms, are included in this phylum.
Pompeii Worm (Alvinella pompejana)
Pompeii Worm (Alvinella pompejana)
This 5-inch-long, pale gray worm lives on hydrothermal vents that release jets of super-heated water. A coating of bacteria allows it to withstand water temperatures as high as 80 C (176 F) and as low as 10 C (50 F).
Common Earthworm (Lumricus terrestris)
Common Earthworm (Lumbricus terrestris)
also known as the night crawler, may be up to 10 inches long. Earthworms move an incredible amount of soil as they burrow and feed. There may be as many as 3 million earthworms per acre of soil, and it has been estimated that 7 to 18 tons of soil can be thrown up by earthworms per acre per year.
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