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Cape Perpetua Special Interest Area

Lincoln County, Oregon · United States

What have people found?

Pacific sideband, robust lancetooth snail and sea palm turn up here more than at our other rock pools. Giant green anemone, ochre sea star and striped shore crab are the usual finds. ~117 distinct species have been recorded here, across at least 7 years of observations.

What is the best time to visit today?

Download the app to see the 7-day schedule.

See low tide times at Cape Perpetua Special Interest Area for the next three days
  1. Sun 15 Nov10:121.2 min the dark23:080.3 m
  2. Mon 16 Nov11:121.2 min the dark23:550.4 m
  3. Tue 17 Nov12:201.1 m

Every low tide each day, in local time at the shore.

Plan the week in Intertidal
  • A tide chart for every day, with the best window marked
  • Identify what you find from a photo
  • An alert when a good daylight low is coming

When do people visit?

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Most observations come from May and July.

What should you know before visiting?

Parking is about 50 meters away.
Arrive 45 minutes to an hour before low tide and leave as it turns. The water comes back faster than it left.
Grippy shoes beat sandals. Wet rock and algae are more slippery than they look. Rock pool safety
A rock pool is a fragile place. Look and photograph, take nothing. The rockpooling code

What lives at Cape Perpetua Special Interest Area?

Species records from iNaturalist

Giant Green AnemoneAnthopleura xanthogrammica
Ochre Sea StarPisaster ochraceus
Striped Shore CrabPachygrapsus crassipes
Pacific Purple Sea UrchinStrongylocentrotus purpuratus
Sea PalmPostelsia palmiformis
Pacific Banana SlugAriolimax columbianus
Gooseneck BarnaclePollicipes polymerus
Aggregating AnemoneAnthopleura elegantissima
California MusselMytilus californianus
Striped DogwinkleNucella ostrina
Pacific SidebandMonadenia fidelis
Pacific Hairy Hermit CrabPagurus hirsutiusculus
Robust Lancetooth SnailHaplotrema vancouverense
Pacific Acorn BarnacleBalanus glandula
Black Leather ChitonKatharina tunicata
Scan this rock pool on your next visit.

Every organism named, every visit logged to your journal.