PHORONIDS Phylum PHORONIDA

The worm-like phoronid body is neither segmented nor bristled. Most conspicuous and definitive is a horseshoe-shaped crown of tentacles that surrounds the mouth. From there, a U-shaped digestive tract begins and loops through the body, culminating in an anus just below the tentacular crown, formally designated a lophophore. This anatomy can be seen in the large green phoronids (PH2) shown in the photograph (by Charlie Gibbs). Dwelling in self-made tubes, these filter-feeding creatures superficially resemble miniature polychaete worms of the feather-duster variety (see p. 151).
Only six species of phoronids live in the marine waters of the Pacific Northwest.

PH1. WHITE COLONIAL PHORONID, twining phoronid

Phoronis ijimai, Phoronopsis ijimai, Phoronopsis vancouverensis, Phoronis vancouverensis

PH2. LARGE GREEN PHORONID

Phoronopsis harmeri, Phoronopsis viridis ?, Phoronopsis pacifica