Laminated ID Card Set

Intertidal Invertebrates
featuring marine life of the Salish Sea* and the Pacific Northwest Coast

Thse ID cards were originally developed for use by WSU Beach Watcher intertidal monitoring teams. Nearly every invertebrate encountered during eight years of monitoring at 28 different sites is represented. (see species list).


Four laminated cards (each 7 1/2" x 11 1/4" or 19 cm x 29 cm) for easy use in the field.

Images and graphic design © Mary Jo Adams and Jan Holmes
Periwinkle Press

Over 230 species (see spreadsheet) are pictured and described, grouped by Phylum:

  • Side 1 - Sponges, Anemones, Jellies, Hydroids, Coral, Sea Pen
  • Side 2 - Ribbon worms, Flatworms, Segmented worm families (see detailed view)
  • Side 3 - Snails and Sea Slugs
  • Side 4 - Bivalves
  • Side 5 - Chitons, Limpets, Abalone, Isopods, Amphipods, Arachnids
  • Side 6 - Crabs and Shrimps
  • Side 7 - Barnacles, Bryozoans, Brachiopods, Ascidians
  • Side 8 - Sea Stars, Urchins, Dollars, Cucumbers, Beach Etiquette

Size, substrate and habitat information are included for all animals. Additional information is included for sea stars, crabs, limpets and barnacles to help distinguish between species

The vast majority of the invertebrates featured on these cards can be found along the Pacific coast from Alaska to Monterey California, and some as far south as Baja California in Mexico.

* The Salish Sea encompasses Puget Sound, the Straits of Georgia, and the Straits of Juan de Fuca. Its waters are shared by British Columbia, Canada & Washington State. The name honors the Coastal Salish Peoples who historically inhabited this coastline. (See MAP).
Last updated October 2009.