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Duxbury Reef, Bolinas

Marin County, California · United States

What have people found?

Button's banana slug, opalescent nudibranch and pacific rock crab turn up here more than at our other tide pools. Ochre sea star, giant green anemone and striped shore crab are the usual finds. ~15 distinct species have been recorded here. More has been recorded at Fitzgerald Marine Reserve, 32.3 miles away.

What is the best time to visit today?

Download the app to see the 7-day schedule.

See low tide times at Duxbury Reef, Bolinas for the next three days
  1. Sun, Nov 159:13 AM2.4 ftin the dark10:40 PM0.3 ft
  2. Mon, Nov 1610:24 AM2.3 ftin the dark11:21 PM0.4 ft
  3. Tue, Nov 1711:38 AM2.1 ft

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 January and April.

What should you know before visiting?

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. Tide pool safety
A tide pool is a fragile place. Look and photograph, take nothing. The tidepooling code

What lives at Duxbury Reef, Bolinas?

Species records from iNaturalist

Ochre Sea StarPisaster ochraceus
Giant Green AnemoneAnthopleura xanthogrammica
Striped Shore CrabPachygrapsus crassipes
Aggregating AnemoneAnthopleura elegantissima
Gooseneck BarnaclePollicipes polymerus
Mossy ChitonMopalia muscosa
California MusselMytilus californianus
Pacific Rock CrabRomaleon antennarium
Dungeness CrabMetacarcinus magister
Opalescent NudibranchHermissenda opalescens
Button's Banana SlugAriolimax buttoni
Northern Kelp CrabPugettia producta
Black TegulaTegula funebralis
Sunburst AnemoneAnthopleura sola
Feather Boa KelpEgregia menziesii
Scan this tide pool on your next visit.

Every organism named, every visit logged to your journal.