Diphyidae

{{Short description|Family of hydrozoans}}

{{Automatic taxobox

| image = Blaschka-Diphyes sp.-Musée zoologique de Strasbourg.jpg

| image_caption = Diphyes sp. from the Black Sea

| taxon = Diphyidae

| authority = Quoy & Gaimard, 1827{{cite WoRMS |author=Schuchert, Peter |year=2015 |title=Diphyidae Quoy & Gaimard, 1827 |id=135338 |accessdate=2015-04-15 }}

| subdivision_ranks = Genera

| subdivision = {{center|See text}}

}}

The Diphyidae are a family of siphonophores. These are colonial siphonophores with two nectophores (swimming bells) arranged one behind the other. The front one includes a somatocyst (extension of the gastrovascular system), while the hind one does not. The somatocyst often contains an oil droplet for buoyancy control. A nectosac (central cavity with muscular walls) in each nectophore allows the organism to swim efficiently.

Systematics

The World Register of Marine Species includes the following taxa in the family Diphyidae:{{Cite web|url=http://marinespecies.org/aphia.php?p=taxdetails&id=135338|title=WoRMS - World Register of Marine Species - Diphyidae Quoy & Gaimard, 1827|website=marinespecies.org|language=en|access-date=2018-03-17}}

References

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Category:Calycophorae

Category:Cnidarian families

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