Sea Cucumbers, Sea Urchins & Sand Dollars

(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.  Some are more frequently found subtidally or in other parts of their range.





Cucumariidae
Cucumaria frondosa japonica Cucumaria frondosa japonica Cucumaria frondosa japonica
Cucumaria frondosa japonica
Mortensen, 1932

Giant Black Sea Cucumber
common, central BC to southeast AK and Arctic Ocean

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This page last revised: 5-25-2014




Cucumaria miniata Cucumaria miniata Cucumaria miniataCucumaria miniata (Brandt, 1835)
Orange Sea Cucumber
very common under rocks, north Mexico to north Alaska


Home > Northwest Shells & Marine Life > PNW Shells & Marine Life Photos > Sea Cucumbers, Sea Urchins & Sand Dollars

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









Schizasteridae
Brisaster latifrons
Brisaster latifrons (A.Agassiz, 1898)
Heart Urchin
only found subtidally, north Mexico to
 north Alaska & Japan













Strongylocentrotus pallidus Strongylocentrotus pallidus
Strongylocentrotus pallidus (G.O. Sars, 1871)
White Sea Urchin
infrequently found, Oregon to north Alaska & N. Atlantic

Strongylocentrotus franciscanus Strongylocentrotus franciscanus
Strongylocentrotus franciscanus (A.Agassiz, 1898)
Red Sea Urchin
occasionally found, north Mexico to north Alaska & Japan

Strongylocentrotidae
Strongylocentrotus droebachiensis Strongylocentrotus droebachiensis Strongylocentrotus droebachiensis
Strongylocentrotus droebachiensis (O.F. Müller, 1776)
Green Sea Urchin
somewhat common in WA, very common in AK;
north Washington to Alaska, Japan & circumpolar

 





Sand Dollars
Phyllophoridae
Pentamera sp.
Pentamera sp.
White Sea Cucumber
somewhat common, several species occur from
north Mexico to south Alaska  
difficult to identify different species



Strongylocentrotus purpuratus Strongylocentrotus purpuratus
                                  Urchin bed
Strongylocentrotus purpuratus
(G.O. Sars, 1871)
Purple Sea Urchin
common, north Mexico to central Alaska

Cucumaria vegae
Cucumaria vegae Theel, 1886
Tiny Black Sea Cucumber
occasionally found, north BC to
 north Alaska & Japan
















 Sea Urchins



Psolidae
Psolidium bidiscum
photographed in an aquarium
Psolidium bidiscum
Lambert, 1996

Pale Creeping Pedal Sea Cucumber
mostly subtidal, central California to south Alaska








Stichopodidae
Parastichopus californicus Parastichopus californicus Parastichopus californicus
                                                                                                                                                                                      also good for a free ride
Parastichopus californicus (Stimpson, 1857)
Giant Sea Cucumber
infrequently found, north Mexico to central Alaska


Sclerodactylidae
Eupentacta quinquesemita
Eupentacta quinquesemita (Selenka, 1867)
Stiff-Footed Sea Cucumber
infrequently found, north Mexico
to south Alaska & Japan




















Synaptidae
Leptosynapta clarki
Leptosynapta clarki Heding, 1928
Burrowing Sea Cucumber
occasionally found, central California to north BC



































































Psolus chitonoides Psolus chitonoides
photographed in an aquarium
Psolus chitonoides Clark, 1901
Creeping Pedal Sea Cucumber
uncommon intertidally, north Mexico to
north Alaska; Japan
































Cucumaria piperata Cucumaria piperata Cucumaria piperata
Cucumaria piperata (Stimpson, 1864)
Peppered Sea Cucumber
occasionally found, north Mexico to north BC
Dendrasteridae
Dendraster excentricus Dendraster excentricus Dendraster excentricus
      dead specimen                     live specimen           sand dollar bed
Dendraster excentricus (Eschscholtz, 1831)
Excentric Sand Dollar
common, north Mexico to south Alaska