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Área Marinha Protegida das Avencas

Lisboa · Portugal

What have people found?

Striped false limpet, netted dogwhelk and red-mouthed dog winkle turn up here more than at our other rock pools. Spiny starfish, snakelocks anemone and atlantic purple sea urchin are the usual finds. ~171 distinct species have been recorded here, across at least 6 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 Área Marinha Protegida das Avencas for the next three days
  1. Sun 15 Nov~12:00
  2. Mon 16 Novin the dark~0:00~13:00
  3. Tue 17 Novin the dark~1:00~14:00

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 March and September.

What should you know before visiting?

Parking is about 250 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 Área Marinha Protegida das Avencas?

Species records from iNaturalist

Spiny StarfishMarthasterias glacialis
snakelocks anemoneAnemonia viridis
Atlantic Purple Sea UrchinParacentrotus lividus
Strawberry AnemoneActinia fragacea
Saint Piran's Hermit CrabClibanarius erythropus
Common OctopusOctopus vulgaris
Atlantic Beadlet AnemoneActinia equina
Montagu's CrabXantho hydrophilus
Cushion StarAsterina gibbosa
Velvet Swimming CrabNecora puber
Marbled CrabPachygrapsus marmoratus
Netted DogwhelkTritia reticulata
European Common CuttlefishSepia officinalis
Striped false limpetSiphonaria pectinata
Red-mouthed Dog WinkleStramonita haemastoma
Scan this rock pool on your next visit.

Every organism named, every visit logged to your journal.