Species by Order: Salpida

Natural History
Cyclosalpa affinis

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.

Cyclosalpa bakeri

The aggregate generation forms circular chains connected to one another, and possesses posterior projections.

Pegea socia

Pegea socia can often be mistaken for a similar species named P. confoederata.  In the P. confoederata aggregate generation, the body muscle bands 3-4 meet and are fused.  The video included for this species is said to be this closely related species, P. confoederata; however, the aggregate chain formation in P. socia is very similar.

Ritteriella retracta

There are two other species of Ritteriella that overlap in distribution with R. retracta: R. picteti and R. amboinensis closely resemble R. retracta but vary in the number of muscle fibers within body muscle bands.

Salpa aspera

High density swarms have been reported for this species. 

Salpa fusiformis

High density swarms have been reported for this species. 

Soestia zonaria
Thalia democratica

High density swarms have been reported for this species. 

Thetys vagina

The largest species of salp along the West Coast of the U.S.