Ascidia paratropa (Huntsman, 1912)

Figure 10C

IHAK 55 BHAK 1731 UF 2542. Kwakshua Petroglyph Cliff, vertical rock wall high current. Scuba, 17–20 m. One specimen .

This species can be up to 11 cm in length and is thought to have a long life span. It is distinguished by its large columnar size and the clear colorless thick tunic covered with short tubercles. Its growth form is upright, attached only at the posterior end. Both siphons are at the anterior end. For detailed descriptions see Huntsman (1912a, b as Ascidiopsis paratropa) and Van Name (1945). This widely distributed but somewhat rare native of the west coast of N. America has a distribution from Alaska to central California (Van Name 1945; Abbott & Newberry 1980; Lamb & Hanby 2005).