IUCN threat status:

Not evaluated

Comprehensive Description

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Biology/Natural History: The spines often accumulate diatoms and debris. If the current is not strong, this species may become so heavily silted that it is almost unrecognizable. Gonads may be fertile in May. Eggs are shed, not brooded. The tadpole larvae are about 2 mm long.

This species contains 175 ppm vanadium in the body (not the tunic).

The pea crab Pinnotheres pugettensis sometimes lives symbiotically within the tunic, the copepod Doropygopsis longicauda may be found in the branchial chamber, and the bryozoan Celleporella hyalina may encrust the spines.


Creative Commons Attribution Non Commercial Share Alike 2.0 (CC BY-NC-SA 2.0)

© Rosario Beach Marine Laboratory

Source: Invertebrates of the Salish Sea

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