Ciona
Ciona is a genus of sea squirts in the family Cionidae.
The body of Ciona is bag-like and covered by a tunic, which is a secretion of the epidermal cells. The body is attached at a permanent base located at the posterior part, and the opposite bears two openings, the buccal (oral) and atrial (cloacal) siphons. The water is drawn into the ascidian through the buccal siphon and leaves the atrium through the atrial siphon.
15 branches of this genus, most-observed first · about 15 known species
Sea Vase
speciesCiona intestinalis
Pacific transparent sea squirt
speciesCiona savignyi
Ciona robusta
speciesCiona robusta
Yellow sea squirt
speciesCiona edwardsi
Ciona intermedia
speciesCiona intermedia
Ciona roulii
speciesCiona roulii
Ciona gelatinosa
speciesCiona gelatinosa
Ciona antarctica
speciesCiona antarctica
Ciona fascicularis
speciesCiona fascicularis
Ciona longissima
speciesCiona longissima
Ciona mollis
speciesCiona mollis
Ciona sheikoi
speciesCiona sheikoi
Ciona imperfecta
speciesCiona imperfecta
Ciona pomponiae
speciesCiona pomponiae
Ciona hoshinoi
speciesCiona hoshinoi
Where it lives
Recorded sightings
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geo-referenced records in GBIF, from museums, herbaria and field observers.
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In the stacks
Searching the stacks…
Every page naming Ciona in the Biodiversity Heritage Library →
This page is assembled live from iNaturalist, GBIF, Wikipedia, the Source Library and the Internet Archive. It is not yet part of the hand-edited codex. iNaturalist taxon 48273.