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Dutch Harbor Naval Operating Base and Fort Mears, U.S. Army

Unorganized Borough, Alaska · United States

What have people found?

Sunflower sea star, pacific lion's mane jelly and rockweed are the usual finds. ~21 distinct species have been recorded here.

What is the best time to visit today?

Download the app to see the 7-day schedule.

Predicted tide from Unalaska, 1.4 miles away.

See low tide times at Dutch Harbor Naval Operating Base and Fort Mears, U.S. Army for the next three days
  1. Sun, Nov 15in the dark4:10 AM0.2 ft
  2. Mon, Nov 16in the dark4:48 AM0.4 ftin the dark7:27 PM2.6 ft
  3. Tue, Nov 17in the dark5:22 AM0.6 ftin the dark7:39 PM2.2 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 July and August.

What should you know before visiting?

Parking is about 800 feet 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. Tide pool safety
A tide pool is a fragile place. Look and photograph, take nothing. The tidepooling code

What lives at Dutch Harbor Naval Operating Base and Fort Mears, U.S. Army?

Species records from iNaturalist

Sunflower Sea StarPycnopodia helianthoides
Pacific Lion's Mane JellyCyanea ferruginea
RockweedFucus distichus
Bull KelpNereocystis luetkeana
Thatched BarnacleSemibalanus cariosus
Reticulate TaildropperProphysaon andersonii
Black Leather ChitonKatharina tunicata
Mottled StarEvasterias troschelii
Arctic Green Sea UrchinStrongylocentrotus droebachiensis
Northern Horse MusselModiolus modiolus
Milky SlugDeroceras reticulatum
Puppet MargariteMargarites pupillus
Northern Bay MusselMytilus trossulus
Graceful Kelp CrabPugettia gracilis
Helmet CrabTelmessus cheiragonus
Scan this tide pool on your next visit.

Every organism named, every visit logged to your journal.