For more information on the habitat, vegetation, and weather of the area where I made this observation, please see the journal entry for April 28, 2012 here on iNaturalist. This seaweed was common all over the beach. It looks strange when it's flattened out at low tide. This particular specimen was about 7 inches long and was a light brown color. I thought it was sea lettuce at first, but, as was helpfully pointed out to me, this Porphyra doesn't grow in clumps as with this specimen and sea lettuce does.
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Comments & Identifications
What leads you to Ulva instead of Porphyra? Usually when I encounter Ulva, it is bright green, while Porphyra, being a red alga, is often brown like this (depending on the species). It also grows in single blades like this as well and is also very thin (1-2 cell layers thick).
I'm not very familiar with WA intertidal life, so I could be wrong- just interested to learn more!
You're probably right, actually. I'm not great at identifying seaweed.
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