Terebratalia transversa (Sowerby, 1846)
Common Lamp Shell
common, north Mexico to north Alaska
Citation: Pacific Northwest Shell Club, www.PNWSC.org
Brachiopods
Mycalidae(growing on Chlamys hastata)
Mycale adhaerens (Lambe, 1893)
Smooth Scallop Sponge
subtidal, Washington to Siberia
Tunicates
Sponges
HalichondriidaeHalichondria panicea (Pallas, 1766)
Yellow-Green Encrusting Sponge
fairly common, north Mexico to north Alaska
Bryozoans
Metandrocarpa taylori Huntsman, 1912
Orange Social Tunicate
common, south California to south Alaska Terebrataliidae
older references call this a
subspecies - caurina
Miscellaneous Invertebrates
(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.
LichenoporidaeDisporella separata Osborn, 1953
Purple Encrusting Bryozoan
subtidal; south California & Washington to BC
Suberitidae
Pseudosuberites montiniger (Carter, 1880)
Peach Ball Sponge
subtidal, north Mexico to north Alaska
ChalinidaeHaliclona sp.Purple Intertidal Spongesouth California to south Alaska
MicrocionidaeOphlitaspongia pennata(Lambe, 1895)Velvety Red Spongenorth Mexico to Alaska
This page last revised: 5-25-2019
Sponges are notoriously hard to identify. There are a large number
of species and many which look similar to each other.
If anyone recognizes our unidentified species, please contact us.
unidentified species 3
a yellow encrusting sponge
photo taken at Anacortes, WA
unidentified species 2
similar to species 1 but
with the large pores scattered
across the top and sides
photo taken at Slip Point, WA
Unidentified Sponges
unidentified species 1
similar to an Orange Finger Sponge with
the large excurrent pores only at the top
photo taken at Slip Point, WA PolyclinidaeAplidium solidum (Ritter & Forsyth, 1917)Red Ascidiansouth California to south BC Suberites domuncula latus Lambe, 1893Hermit Crab Spongesouth California to north Alaska
Styelidae Cnemidocarpa finmarkiensis(Kiaer, 1893)Broadbase Tunicatecommon, central California tosouth Alaska; Japan; circumboreal
LaqueidaeLaqueus californianus (Koch, 1848)
California Lamp Shell
infrequently found; south California to
Alaska, Japan