Add 'This Annelid-Associated Article is A Stub'

This-Annelid-Associated-Article-is-A-Stub.md

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+<br>The Serpulidae are a household of sessile, tube-constructing annelid worms in the category Polychaeta. The members of this household differ from different sabellid tube worms in that they have a specialized operculum that blocks the entrance of their tubes once they withdraw into the tubes. In addition, serpulids secrete tubes of calcium carbonate. Serpulids are an important biomineralizers among annelids. About 300 species within the family Serpulidae are recognized,  [BloodVitals review](https://trlittlegit.func.tairongkj.com/mellissabagwel) all however one of which live in saline waters. The blood of most species of serpulid and sabellid worms incorporates the oxygen-binding pigment chlorocruorin. That is used to transport oxygen to the tissues. It has an affinity for carbon monoxide which is 570 times as strong as that of the haemoglobin present in human [wireless blood oxygen check](https://gitea.bastiqui.com/xavierkirklin1). Empty serpulid shells can sometimes be confused with the shells of a household of marine gastropod mollusks, the Vermetidae or worm snails. The most obvious difference is that serpulid shells are dull inside, whereas the molluscan vermetid shells are shiny inside.<br>
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+<br>Rossana Sanfilippo