Entoprocts are minute, sedentary or sessile, semi-transparent, aquatic animals that encrust surfaces or live in association with other invertebrates. They form a distinctive and individual group of suspension feeders that are both widespread and abundant. The group is perhaps best known for being phylogenetically enigmatic, with no obvious close relatives.
This Synopsis contains a detailed account of the phylum Entoprocta from British and adjacent waters. It includes the 3 families Loxosomatidae (36 species), Pedicellinidae (3 species) and Barentsiidae (6 species).