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Halcampidae
Halcampa decemtentaculata Halcampa decemtentaculata Halcampa decemtentaculata
                                                                                        body exposed from sand
Halcampa decemtentaculata Hand, 1955
Ten-Tentacled Burrowing Anemone
Usually only seen subtidally, central California to south BC



Cerianthidae
Pachycerianthus fimbriatus
Pachycerianthus fimbriatus
McMurrich, 1910
Tube-dwelling anemone
Usually only seen subtidally,
north Mexico to south Alaska

Sea Anemones

Cnidarians

(Oregon to Southeast Alaska)

Click on photo to enlarge.  Scale line in photo equals 1cm unless otherwise specified.

Notations refer to how often they can be found intertidally by
beachgoers in the Northwest plus their full habitat range. 














Actiniidae
Anthopleura artemisia Anthopleura artemisia Anthopleura artemisia
Anthopleura artemisia (Pickering in Dana, 1846)
Burrowing Anemone
common, south California to south Alaska




















Urticina columbiana Urticina columbiana Urticina columbiana
Urticina columbiana Verrill, 1922
Sand-Rose Anemone
only subtidal, north Mexico to south BC


Urticina grebelnyi Urticina grebelnyi Urticina grebelnyi Urticina grebelnyi
Urticina grebelnyi Sanamyan & Sanamyan, 2006
Painted Anemone
common, Washington to Alaska & Siberia



Epiactis prolifera
Epiactis prolifera Verrill, 1869
Brooding Anemone
common, south California to Alaska


Anthopleura xanthogrammica Anthopleura xanthogrammica
Anthopleura xanthogrammica (Brandt, 1835)
Giant Green Anemone
common, north Mexico to south Alaska



Anthopleura elegantissima Anthopleura elegantissima Anthopleura elegantissima
Anthopleura elegantissima (Brandt, 1835)
Pink-Tipped Anemone or Aggregating Anemone
common, north Mexico to Alaska












Metridiidae
Metridium farcimen Metridium farcimen
Metridium farcimen (Tilesius, 1809)
Giant Plumose Anemone
occasionally found - at extreme low tide,
north Mexico to north Alaska

















Actinostolidae
Stomphia didemon
Stomphia didemon Siebert, 1973
Swimming Anemone
subtidal, south California to Alaska






Stylasteridae
Stylantheca sp.
Stylantheca sp.
Purple Encrusting Hydrocoral
occasionally found, south California
to south Alaska



Hydrocorals

Metridium senile Metridium senile Metridium senile
Metridium senile (Linnaeus, 1767)
Short Plumose Anemone
common, south California to north Alaska & circumpolar



Urticina piscivora Urticina piscivora
Urticina piscivora (Sebens & Laakso, 1977)
Fish-Eating Anemone
occasionally found, south California to north Alaska

Urticina lofotensis
Urticina lofotensis
(Danielssen, 1890)

White-Spotted Rose Anemone
occasionally found,
south California to north Alaska
























Ulmaridae
Phacellophora camtschatica Phacellophora camtschatica
                                                               upside down
Phacellophora camtschatica Brandt, 1835
Fried Egg Jellyfish
sometimes seen in the shallows, pelagic
Chile to north Alaska; Japan; Siberia
Cyaneidae
Cyanea capillata
Cyanea capillata (Linnaeus, 1758)
Lion's Mane
infrequently seen on beach, pelagic
Mexico to north Alaska
Stinging tentacles - Beware!













Porpitidae
Velella velella
washed up on beach
Velella velella (Linnaeus, 1758)
By-The-Wind-Sailor
pelagic, temperate & tropical oceans

Sea Pens





Pennatulidae
Ptilosarcus gurneyi Ptilosarcus gurneyi Ptilosarcus gurneyi Ptilosarcus gurneyi
   subtidal photo                          taken in an aquarium                subtidal photo, juvenile
Ptilosarcus gurneyi (Gray, 1860)
Orange Sea Pen
subtidal, north Mexico to north Alaska






Lucernariidae
Haliclystus stejnegeri
Haliclystus stejnegeri Kishinouye, 1899
Stalked Jellyfish
infrequently found, Washington to north Alaska




Aeginidae
Aegina citrea
Aegina citrea Eschscholtz, 1829
Four Tentacled Jelly
south California to north Alaska;
all warm and temperate oceans; pelagic
Corynidae
Polyorchis penicillatus Polyorchis pencillatus
       subtidal                        juvenile found in a tidepool
Polyorchis penicillatus (Eschscholtz, 1829)
Red-eye Jellyfish
pelagic, north Mexico to Alaska

Aequoreidae
Aequorea victoria
Aequorea victoria
(Murbach & Shearer, 1902)
Crystal Jelly
pelagic, north Mexico to north Alaska




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Zoanthids

Epizoanthidae
Epizoanthus scotinus
Epizoanthus scotinus Wood, 1958
Orange Zoanthid
infrequently found; south California
to north Alaska, Siberia



This page last revised: 7-28-2017

Aglaopheniidae
Aglaophenia sp.
Aglaophenia sp.
Ostrich-Plume Hydroid
fairly common, north Mexico to Alaska

Hydroids




 















Citation:  Pacific Northwest Shell Club, www.PNWSC.org











Mitrocomidae
Mitrocoma cellularia
Mitrocoma cellularia (A.Agassiz, 1865)
Cross Jellyfish
sometimes seen in the shallows, pelagic  central California to north Alaska



Aequorea sp.
Aequorea sp.
Water Jelly
sometimes seen in the shallows, pelagic
 north Mexico to north Alaska

Jellies