Weelia cylindrica Cuvier, 1804
Phylum Chordata / Subphylum Urochordata / Class Thaliacea / Order Salpida / Family Salpidae

Although widespread, ranging throughout the Atlantic and Pacific Oceans, you’ll rarely encounter this oceanic dwelling salp on either coast. It’s a close relative of the various species of Salpa and is difficult to distinguish from them. For single individuals (as in the photo) the best characteristics are the cylindrical body, thin soft test, 9 muscle bands, and terminal oral and atrial (posterior) openings. The small spherical compact gut is located at the posterior end. Zooids are aligned in the same direction as the chain axis for aggregates. Individuals within the aggregate each have 5 body muscles, with oral and atrial openings pointed dorsally.

All images in the JelliesZone © David Wrobel and may not be copied or used in any form without permission.

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