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Polychaeta (/ ˌ p ɒ l ɪ ˈ k iː t ə /) is a paraphyletic [1] class of generally marine annelid worms, commonly called bristle worms or polychaetes (/ ˈ p ɒ l ɪ ˌ k iː t s /). Each body segment has a pair of fleshy protrusions called parapodia that bear many bristles, called chaetae, which are made of chitin. More than 10,000 species ...
Alvinella pompejana, the Pompeii worm, is a species of deep-sea polychaete worm (commonly referred to as "bristle worms"). It is an extremophile found only at hydrothermal vents in the Pacific Ocean , discovered in the early 1980s off the Galápagos Islands by French marine biologists .
Osedax is a genus of deep-sea siboglinid polychaetes, commonly called boneworms, zombie worms, or bone-eating worms. Osedax is Latin for "bone-eater". The name alludes to how the worms bore into the bones of whale carcasses to reach enclosed lipids, on which they rely for sustenance. They utilize specialized root tissues for bone-boring.
The genus Glycera is a group of polychaetes (bristle worms) commonly known as bloodworms.They are typically found on the bottom of shallow marine waters, and some species (e.g. common bloodworms) can grow up to 35 cm (14 in) in length.
Juvenile and other worms of small size have small crowns and radioles, so prefer to capture and eat very small particles, such as bacterioplankton and single-celled phytoplankton and zooplankton. As a worm matures and grows in size, so does its crown. The larger crown allows the animal to feed on larger multicellular plankton.
The sea mouse is an active predator [2] feeding primarily on small crabs, hermit crabs and other polychaete worms including Pectinaria and Lumbriconereis. [2] It has been observed consuming other polychaete worms over three times its own body length. [2] Feeding activity takes place at night, with the animal partially buried in sand. [2]
They are also used as fish feed in aquaculture. [6] Ragworms, such as Tylorrhynchus heterochetus, are considered a delicacy in Vietnam where they are used in the dish chả rươi. [7] In rice-growing areas of China, these worms are called 禾虫 (Mandarin: hé chóng, Cantonese: woh4 chuhng4).
Sirsoe methanicola is a species of polychaete worm that inhabits methane clathrate deposits in the ocean floor. The worms colonize the methane ice and appear to survive by gleaning bacteria, which in turn metabolize the clathrate. In 1997, Charles Fisher, professor of biology at Pennsylvania State University, discovered the worm living on ...