Halcampidae

body exposed from sand

Halcampa decemtentaculata Hand, 1955
Ten-Tentacled Burrowing Anemone
Usually only seen subtidally, central California to south BC

Cerianthidae

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

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

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

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

Epiactis ritteri Torrey, 1902
Ritter's Brooding Anemone
central California to Alaska

Cribinopsis fernaldi Siebert & Spaulding, 1976
Snakelock Anemone
subtidal, north Washington to south Alaska

Urticina clandestina
Sanamyan N., Sanamyan K., & McDaniel, 2013
intertidal to subtidal, at least Washington to BC, full range yet to be determined

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

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

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

Metridiidae

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

Actinostolidae

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

Stylasteridae

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

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

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

Ulmaridae

upside down

Phacellophora camtschatica Brandt, 1835
Fried Egg Jellyfish
sometimes seen in the shallows, pelagic
Chile to north Alaska; Japan; Siberia

Cyaneidae

Cyanea capillata (Linnaeus, 1758)
Lion's Mane
infrequently seen on beach, pelagic
Mexico to north Alaska
Stinging tentacles - Beware!

Porpitidae

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

Pennatulidae

subtidal photo taken in an aquarium subtidal photo, juvenile

Ptilosarcus gurneyi (Gray, 1860)
Orange Sea Pen
subtidal, north Mexico to north Alaska

Haliclystidae

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

Aeginidae

Aegina citrea Eschscholtz, 1829
Four Tentacled Jelly
south California to north Alaska;
all warm and temperate oceans; pelagic

Corynidae

subtidal juvenile found in a tidepool

Polyorchis penicillatus (Eschscholtz, 1829)
Red-eye Jellyfish
pelagic, north Mexico to Alaska

Aequoreidae

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

Epizoanthidae

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

Aglaopheniidae

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

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

Mitrocomidae

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

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