Sea Urchins and Sand Dollars

Below are examples of sea urchins and sand dollars I’ve run across on Pacific Northwest shores. It’s a scant list. Nevertheless, my organization follows Lamb and Hanby (2005). The common names are my choice. I refer to WoRMS for scientific names, and I learn a ton by browsing the natural history riches in Kozloff (1993). Biodiversity of the Central Coast’s Echinoderms page is full of great information on sea urchins and sand dollars. For more information, the books, field guides, and other resources listed at the bottom of the page cover the species I show below.

Dendraster excentricus, eccentric sand dollar
On the open coast, it’s most common to find bleached shell fragments. Sand dollar beds are mostly subtidal, but some of the bays have sand dollar beds that are more or less accessible at low tide.

References

Gotshall, D. W. 2005. Guide to Marine Invertebrates, Alaska to Baja California 2nd Edition (Revised). Shoreline Press.

Harbo, R. M. 2011. Whelks to Whales: Coastal Marine Life of the Pacific Northwest. 2nd ed. Harbour Publishing Co.

Kozloff, E. N. 1993. Seashore Life of the Northern Pacific Coast. 3rd ed. University of Washington Press.

Lamb, A. and B. P. Hanby. 2005. Marine Life of the Pacific Northwest. Harbour Publishing.

Sept. J. D. 2009. The Beachcomber’s Guide to Seashore Life in the Pacific Northwest. Revised ed. Harbour Publishing.


Online Resources

Biodiversity of the Central Coast’s Echinoderms page is full of great information on Pacific Northwest sea urchins and sand dollars.


This page was created November 7, 2021.