Postelsia
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Postelsia palmaeformis, also known as the sea palm or palm seaweed, is a species of kelp and classified within brown algae in the SAR supergroup of eukaryotes. It is the only known species in the genu
Fossil specimen of Postelsiopsis.
Sea palms at low tide, off Pigeon Point, California.
The California mussel (Mytilus californianus), Postelsia's chief animal competitor.
Tide pool
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A tide pool or rock pool is a shallow pool of seawater that forms on the rocky intertidal shore. These pools typically range from a few inches to a few feet deep and a few feet across. Many of these p
A tide pool in Porto Covo, west coast of Portugal
Tide pools in Santa Cruz, California from spray/splash zone to low tide zone
Low tide zone in a tide pool
The site of a tide pool in Santa Cruz, California showing starfish, sea anemones, and sea sponges.