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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. [10] 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. [7]
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. [ 2 ] Description
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.
These worms can reach a length of 3 m (9 ft 10 in), [3] and their tubular bodies have a diameter of 4 cm (1.6 in). Its common name "giant tube worm" is, however, also applied to the largest living species of shipworm, Kuphus polythalamius, which despite the name "worm", is a bivalve mollusc rather than an annelid.
Casey posted a video to Instagram on December 26 showing a spoon worm heading beneath the sand.Spoon worms, or echiura, number “about 150” known species according to Encyclopedia Britannica.
Researchers have uncovered fossils of giant predator worms, some of Earth’s earliest carnivorous animals that roamed the seas 518 million years ago.
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It can be very large in comparison with the size of this particular host. If the limpet is attacked by a starfish, such as Pisaster ochraceus , the scale worm defends its host by biting the tube feet of the starfish, usually succeeding in driving it away.