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Polynoidae is a family of marine Polychaete worms known as "scale worms" due to the scale-like elytra on the dorsal surface. Almost 900 species are currently recognised belonging to 9 subfamilies and 167 genera. [1] They are active hunters, but generally dwell in protected environments such as under stones.
Peinaleopolynoe is a genus belonging to the family Polynoidae (scale worms). Members of this genus generally live in nutrient-rich environments in the deep sea, such as whale fall, which is the reason for their name (Greek plural πειναλεoσ, peinaleos; "famished"). [1] [2]
The scale worms are characterized by their body segment amount. They can get up to 40 segments with around 15 pairs of elytra on each segment. [8] Their bodies are large and flattened. The elytra are the scales that are attached to the segments. The scale arrangement is an important character in identifying the species of scale worm. [5]
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 .
The bootlace worm (Lineus longissimus) is a species of ribbon worm and one of the longest known animals, with specimens up to 55 m (180 ft) long being reported. [1] Its mucus is highly toxic. [ 2 ]
Pettibone, 1997 [1] Eulagisca uschakovi is a giant scale worm known from the Antarctic , in waters such as off Mac.Robertson Land , Palmer Archipelago and the Weddell Sea , at depths of 10 to 920m.
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.
Riftia pachyptila, commonly known as the giant tube worm and less commonly known as the giant beardworm, is a marine invertebrate in the phylum Annelida [1] (formerly grouped in phylum Pogonophora and Vestimentifera) related to tube worms commonly found in the intertidal and pelagic zones.