Velella mutica = Sea raft jellyfish (Velella velella)

Velella mutica
Source/Photographer Iconographia Zoologica
Old Latin name Velella mutica
New Latin name Velella velella
Common name sea raft, by-the-wind sailor, purple sail, little sail
Source: https://commons.wikimedia.org/wiki/File:Velella_mutica_-_-_Print_-_Iconographia_Zoologica_-_Special_Collections_University_of_Amsterdam_-_UBAINV0274_110_16_0002.tif

Velella is a monospecific genus of hydrozoa in the Porpitidae family. Its only known species is Velella velella, a cosmopolitan free-floating hydrozoan that lives on the surface of the open ocean. It is commonly known by the names sea raft, by-the-wind sailor, purple sail, little sail, or simply Velella. This small cnidarian is part of a specialised ocean surface community that includes the better-known cnidarian siphonophore, the Portuguese man o' war. Specialized predatory gastropod molluscs prey on these cnidarians. Velella velella lives in warm and temperate waters in all the world's oceans.

Order: Anthoathecata
Family: Porpitidae
Genus: Velella Lamarck, 1801
Species: Velella velella (Linnaeus, 1758)
Synonyms
(Genus)

Armenista Haeckel, 1888
Rataria Eschscholtz, 1829
Velaria Haeckel, 1888

(Species)

Armenista sigmoides Haeckel, 1888
Holothuria spirans Forsskål, 1775
Medusa pocillum Montagu, 1815
Medusa velella Linnaeus, 1758
Rataria cordata Eschscholtz, 1829
Rataria mitrata Eschscholtz, 1829
Velella antarctica Eschscholtz, 1829
Velella aurora Eschscholtz, 1829
Velella australis de Haan, 1827
Velella caurina Eschscholtz, 1829
Velella cyanea Lesson, 1826
Velella emarginata Quoy & Gaimard, 1824
Velella indica Eschscholtz, 1829
Velella lata Chamisso & Eysenhardt, 1821
Velella limbosa Lamarck, 1816
Velella meridionalis Fewkes, 1889
Velella mutica Lamarck, 1801
Velella oblonga Chamisso & Eysenhardt, 1821
Velella oxyothone Brandt, 1835
Velella pacifica de Haan, 1827
Velella patellaris Brandt, 1835
Velella pyramidalis Cranch, 1818
Velella radackiana de Haan, 1827
Velella sandwichiana de Haan, 1827
Velella scaphidia Peron & Lesueur, 1807
Velella septentrionalis Eschscholtz, 1829
Velella sinistra Chamisso & Eysenhardt, 1821
Velella tentaculata Lamarck, 1801
Velella tropica Eschscholtz, 1829