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Sandworms eat seaweed and microorganisms. Sandworms are known to be omnivores. Their diet consists of surface sediment, plant and animal remains. They are oftentimes exposed to metals through their diet and their burrowing tactics. [5] They have many distinctive traits, including: often reaching great lengths, sometimes exceeding four feet
Errantia is a diverse group of marine polychaete worms in the phylum Annelida. Traditionally a subclass of the paraphyletic class Polychaeta, [4] it is currently regarded as a monophyletic group within the larger Pleistoannelida, composed of Errantia and Sedentaria. [2] These worms are found worldwide in marine environments and brackish water.
A. teres and A. parateres were identified in 1868 by Ehlers as Diopatra teres [11] and in 1878 they were placed in the genus Onuphis by Grube. [4] In 1979, Paxton re-classified them into their current taxonomy, [4] in what is regarded as the authority study on Australian beach worms. [5]
Pleistoannelida is a group of annelid worms that comprises the vast majority of the diversity in phylum Annelida.Discovered through phylogenetic analyses, it is the largest clade of annelids, comprised by the last common ancestor of the highly diverse sister groups Errantia and Sedentaria (Clitellata and related polychaetes) and all the descendants of that ancestor.
Errantia contains the eunicid and phyllodocid polychaetes, and several archiannelids. Some small groups, such as the Myzostomida , are more difficult to place due to long branching , but belong to either one of these large groups.
It's flu season right now, and the U.S. is in the midst of a wave that's straining hospitals.But not all influenza is the same. There are some notable differences between flu A and flu B strains.
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]
At greater depths they are found adhering to bedrock, in crevices and under boulders. [4] In New Zealand there have been many recent reports of the parchment-like tubes of Chaetopterus littering beaches, especially after storms. Since about 1995, large areas of shallow sea have been invaded by the worm, believed to be C. variopedatus.