Join Janna Nichols and Ellie Place on the final of a four part series on how to find and identify the invertebrates you can see on your dives in the Pacific Northwest. This is a great introductory course, as well as a review for more experienced surveyors. All are welcome!


  • California Sea Cucumber - (Apostichopus californicus)
  • Orange Sea Cucumber - (Cucumaria miniata)
  • Leather Star - (Dermasterias imbricata)
  • Spiny Pink Star - (Pisaster brevispinus)
  • Sunflower Star - (Pycnopodia helianthoides)
  • Vermilion Star - (Mediaster aequalis)
  • Eccentric Sand Dollar - (Dendraster excentricus)
  • Green Sea Urchin - (Strongylocentrotus droebachiensis)
  • Red Sea Urchin - (Mesocentrotus franciscanus)
  • Basket Star - (Gorgonocephalus eucnemis)
  • Feather Star - (Florometra serratissima)

[BONUS! A special musical interlude]

Urochordata (Tunicata)

  • Glassy Sea Squirt - (Ascidia paratropa)
  • Orange Social Ascidian - (Metandrocarpa taylori/dura)
  • Shiny Orange Sea Squirt - (Cnemidocarpa finmarkiensis)

Invasive Tunicates:

  • Club Tunicate - (Styela clava)
  • Invasive Didemnum Tunicate - (Didemnum vexillum)
  • Transparent Ciona Tunicate - (Ciona savignyi)