Common Marine Algae in the Northern Oregon Drift Line: A Gallery of Images

My post about bull kelp drift masses, back in early December, got me thinking about other algae people might find washed up in the drift line. On my home beaches, bull kelp is certainly the most noticeable. Small clumps of rockweed are abundant, and sea palms, when present, are hard to miss. Fresh giant kelp is the most attractive alga in the driftline, in my opinion. Tufts of sargassum aren’t bad looking either, but some people are put off by it, it being introduced here. Turkish towel, sea lettuce, and feather boa kelp round out my list of common large marine algae you can expect in the drift line on northern Oregon beaches.

Fresh drift bull kelp Nereocystis luetkeana resting on beach sand.
In fresh drift bull kelp, you get to see the blades originating at the pneumatocyst (float)
Rockweed, Fucus
Closeup on the blades of two drift Sea palm Postelsia palmaeformis stipes resting up in the cobbles.
Sea palm, Postelsia palmaeformis
Giant kelp, Macrocystis pyrifera, surfgrass
Giant kelp, Macrocystis pyrifera, surfgrass
Sargassum, Sargassum muticum
Sargassum, Sargassum muticum
A large beach cast Chondracanthus blade rests on the sand along with a bladed green seaweed that looks like Ulva and a couple kelp blades.
Sea lettuce, Ulva (green) and Turkish towel, Chondracanthus exasperatus
Closeup on an Egregia menziesii frond drying on sand and some rocks.
Feather boa kelp, Egregia menziesii

Here are a few more images showing what these common algae look like when they wash up on the beaches. If you don’t know these algae well, you might be able to use this gallery to practice your identification skills. There is one unidentified form in the mix. If you know what it is, please let me know.

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