Cyclosalpa affinis


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Temperate and tropical waters, common in California waters and occasionally found in the Gulf of Alaska.
Aggregate generation: to 46 mm; solitary generation: to 74 mm long
Filter feeders; phytoplankton and other small particles.
Medusae, siphonophores, ctenophores, heteropods, sea turtles, marine birds and many fish.
Useful Facts or Characters: 

The aggregate generation zooid possesses a very flaccid tunic, and the intestine is shaped in a broad loop.  The solitary generation zooid also possesses a very flaccid tunic and elongate intestine or gut.  

Natural History: 

The aggregate generation forms circular chains connected to one another, and can be distinguished from the closely related species C. bakeri by the absence of posterior projections.


Bone, Q. (1998) The biology of pelagic tunicates. Oxford University Press, Oxford.

Wrobel, D. and Mills, C. (1998) Pacific Coast pelagic invertebrates:  a guide to the common gelatinous animals. Sea Challengers, Monterey Bay Aquarium, Monterey, CA.

Yount, J.L. (1954) The taxonomy of the Salpidae (Tunicata) of the central Pacific Ocean. Pacific Science 8: 276-330.