Seaweeds and Seagrasses

Cattle Point - San Juan Island

 

World wide there are 7000 estimated seaweeds, 4000 microalgae and 50 seagrasses.  Here in the Pacific Northwest we have an estimated 700 of these species making our area one of the richest in seaweed biodiversity in the world.  (Harbo, 1999)

Sites visited:

Fox Island - South Puget Sound

Willapa Bay - WA Outer Coast

Trip aboard the Centennial - San Juan Island

Argyle Lagoon - San Juan Island

False Bay - San Juan Island

Cattle Point - San Juan Island

Salt Creek - Olympic Peninsula

Sokal Point - Olympic Peninsula

Photo by Holly: Typical rocky shore of Cattle Point.

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Photo by Bonnie: Finding critters in the tide pools.

Photo by Bonnie: A lesson on tide hight measurments

Species list for algae found Cattle Point - San Juan Island

Greens: Ulva

Reds: Branched and encrusting coralline algae, Gracileria, Porphyra, Endocladia, Halosaccion, Odonthalia

Browns: Fucus, Sargassum, Leathesia, Cymathere, Egregia

Grasses: Pyllospadix

 

green   red   brown
   

 

sea grass

 

purple sea star

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