Saccocirridae

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Saccocirridae
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Annelida
Class:	Polychaeta
Order:	incertae sedis
Family:	Saccocirridae Czerniavsky, 1881
Genera[1]
Pharyngocirrus Di Domenico, Martínez, Lana & Worsaae, 2014 Saccocirrus Bobretzky, 1872

The Saccocirridae are small interstitial polychaetes common in coarse sand on reflective, surf beaches, usually within the zone of retention. Saccocirridae have a worldwide distribution and many more species likely remain to be described. These polychates are usually between 2 and 10 millimetres (0.08 and 0.39 in) in length and 500 μm wide. They have reduced parapodia and are considered a true interstitial species, incapable of burrowing through finer sediments.