Marwick Head

What have people found?

Common european limpet, european green crab and saw wrack are the usual finds. ~18 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 for Stromness, from The UK Hydrographic Office.

See low tide times at Marwick Head for the next three days
  1. Sun 15 Novin the dark5:511.5 min the dark18:361.4 m
  2. Mon 16 Novin the dark6:391.7 min the dark19:431.4 m
  3. Tue 17 Nov7:501.8 min the dark21:011.4 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 June.

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 Marwick Head?

Species records from iNaturalist

Common European LimpetPatella vulgata
European Green CrabCarcinus maenas
Saw WrackFucus serratus
Lion's Mane JellyCyanea capillata
Atlantic Beadlet AnemoneActinia equina
Japanese WireweedSargassum muticum
Garden SnailCornu aspersum
Common Moon JellyAurelia aurita
Knotted WrackAscophyllum nodosum
Common PeriwinkleLittorina littorea
Strawberry SnailTrochulus striolatus
Spiral WrackFucus spiralis
ThongweedHimanthalia elongata
Channelled WrackPelvetia canaliculata
Blue-rayed LimpetPatella pellucida
Scan this rock pool on your next visit.

Every organism named, every visit logged to your journal.