Florent's Guide To The Hawaiian, South Pacific and

Indo-Pacific Reefs

California Horseshoe Worm
Phoronopsis californica
California Horseshoe Worm
Category: Horseshoe Worms
Scientific Name: Phoronopsis californica
Size: Up to 1.5 in. (4 cm)  
Distribution: Pacific, Indonesia
Phoronida (Phylum) Horseshoe Worms
└Phoronidae (Family)
 └Phoronopsis (Genus)
  └P. californica (Species)
WoRMS ID: 128554🔗
iNaturalist ID: 623257🔗

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© 2026 Florent Charpin