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Los Arcos de Mismaloya

Puerto Vallarta, Jalisco · Mexico

What have people found?

Pin cushion sea urchin, agassiz's chromodorid and orange cup coral turn up here more than at our other rock pools. Red-tipped sea goddess, rose flower urchin and sally lightfoot crab are the usual finds. ~188 distinct species have been recorded here.

Tide

We do not have a tide source for this coast yet.

View the predicted tide at Santuario Islas de la Bahía de Chamela, 112 kilometers away.

When do people visit?

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Most observations come from April and May.

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. Rock pool safety
A rock pool is a fragile place. Look and photograph, take nothing. The rockpooling code

What lives at Los Arcos de Mismaloya?

Species records from iNaturalist

Red-tipped Sea GoddessChromolaichma sedna
Rose Flower UrchinToxopneustes roseus
Sally Lightfoot CrabGrapsus grapsus
Ecuadorian Hermit CrabCoenobita compressus
Pyramid Sea StarPharia pyramidata
Panamic Cushion StarPentaceraster cumingi
Chiton albolineatusChiton albolineatus
Orange Cup CoralTubastraea coccinea
Rough-ribbed NeriteNerita scabricosta
Ischnochiton muscariusIschnochiton muscarius
Diomedes' SapsuckerElysia diomedea
Pin Cushion Sea UrchinAstropyga pulvinata
Agassiz's ChromodoridFelimare agassizii
Aplysina gerardogreeniAplysina gerardogreeni
Needle Sea UrchinDiadema mexicanum
Scan this rock pool on your next visit.

Every organism named, every visit logged to your journal.