Pacific Northwest Invertebrates

Below is the list of invertebrate species that are monitored as part of the REEF Invertebrate Monitoring Program, a companion to REEF Fish Survey Project in the Pacific Northwest.

Original List of Species Monitored Since 1998

Presence/Absence

  • Strawberry Anemone, Corynactis californica
  • Orange Social Ascidian, Metandrocarpa sp.(M. taylori, M. dura)
  • Fringed Tube Worm, Dodecaceria fewkesi

Count Data: Single (1), Few (2-10), Many (11-100), Abundant (>100)

  • Chimney Sponge, Rhabdocalyptus dawsoni and Staurocalyptus dowlingi
  • Cloud/Goblet Sponge, Aphrocallistes vastus and Chonelasma calyx
  • Candy Stripe Shrimp, Lebbeus grandimanus
  • Coonstripe Shrimp, Pandalus danae
  • Dungeness Crab, Cancer magister
  • Giant Barnacle, Balanus nubilus
  • Northern Kelp Crab, Pugettia producta
  • Red Rock Crab, Cancer productus
  • Spot Prawn, Pandalus platyceros
  • Lacy Bryozoan, Phidolorpora labiata (formerly P. pacifica)
  • Fish-eating Anemone, Urticina piscivora, (formerly in genus Tealia)
  • Plumose Anemone, Metridium senile and Metridium giganteum
  • Tube-dwelling Anemone, Pachycerianthus fimbriatus
  • White-spotted Anemone, Urticina lofotensis (formerly in genus Tealia)
  • Moon Jelly, Aurelia aurita and Aurelia labiata
  • Sea Blubber, Cyanea capillata
  • Orange Cup Coral, Balanophyllia elegans
  • Pink Hydrocoral, Stylaster sp. (S. verrilli and S. venusta)
  • Orange Sea Pen, Ptilosarcus gurneyi
  • California Sea Cucumber, Parastichopus californicus
  • Orange Sea, Cucumber Cucumaria miniata
  • Leather Star, Dermasterias imbricata
  • Spiny Pink Star, Pisaster brevispinus
  • Sunflower Star, Pycnopodia helianthoides
  • Green Sea Urchin, Strongylocentrotus droebachiensis
  • Red Sea Urchin, Strongylocentrotus franciscanus
  • Eccentric Sand Dollar, Dendraster excentricus
  • Giant Nudibranch, Dendronotus iris
  • Opalescent Nudibranch, Hermissenda crassicornis
  • White-lined Dirona, Dirona albolineata
  • Yellow Margin Dorid, Cadlina luteomarginata
  • Giant Pacific Octopus, Octopus dofleini
  • Leafy Hornmouth, Ceratastoma foliatum
  • Lewis's Moonsnail, Euspira lewisii, (Formerly Polinices lewisii)
  • Oregon Triton, Fusitriton oregonensis
  • Gumboot Chiton, Cryptochiton stelleri
  • Northern Abalone, Haliotis kamtschatkana
  • Rock Scallop, Crassadoma gigantea (formerly Hinnites gigsanteus)
  • Feather Duster Worm, Eudistylia vancouveri
  • Shiny Orange Sea Squirt, Cnemidocarpa finmarkiensis

Invasive Tunicates Added to the Monitoring List in August 2008 

  • Transparent Ciona Tunicate, Ciona savignyi
  • Invasive Didemnum Tunicate, Didemnum vexillum
  • Invasive Club Tunicate, Styela clava

More information on the three invasive tunicates can be found here.

Additional Species Added to the Monitoring List in August 2015

  • Yellow Boring Sponge, Cliona californiana
  • Orange Zoanthid, Epizoanthus scotinus
  • Fluted Bryozoan, Hippodiplosia insculpta
  • Puget Sound King Crab, Lopholithodes mandtii
  • Squat Lobster, Munida quadrispina
  • Graceful Crab, Cancer gracilis
  • Leopard Dorid, Diaulula sandiegensis
  • Clown Dorid, Triopha catalinae
  • Stubby Squid, Rossia pacifica
  • Vermilion Star, Mediaster aequalis
  • Basket Star, Gorgonocephalus eucnemis
  • Feather Star, Florometra serratissima
  • Glassy Sea Squirt, Ascidia paratropa
  • Sargassum, Sargassum muticum
  • Bull Kelp, Nereocystis luetkeana
  • Giant Kelp, Macrocystis pyrifera
  • Eelgrass spp., Zostera spp.
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