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Arenal,
Castro-Urdiales, Spain
No information
20.1°C
Last updated :
11/10/2026 06:00
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Worldwide
Spain
North Coast
Castro-Urdiales
Arenal
Beach
Playa de Ostende o Urdiales
Playa de Arciseri
Playa de Oriñón
Playa Brazomar
Playa de Dício
Playa de Arenillas
Unnamed beach
Cala de Los Frailes
Cala de Cotolino
Arenal
Cala de Dícido
Cala El Pedregal
Playa Puerto Refugio de Islares
Playa de Cotonera
Solarium
Playa de La Turbia
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-- Beach (if available) --
Playa de Ostende o Urdiales
Playa de Arciseri
Playa de Oriñón
Playa Brazomar
Playa de Dício
Playa de Arenillas
Unnamed beach
Cala de Los Frailes
Cala de Cotolino
Arenal
Cala de Dícido
Cala El Pedregal
Playa Puerto Refugio de Islares
Playa de Cotonera
Solarium
Playa de La Turbia
My position
Observation position
Date of observation
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none
very little
few
a lot
Water temperature
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Identification
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What did they look like?
Other
Pelagia N.
5 - 10 cm
Aurelia A.
25 - 40 cm
Rhizostoma O.
20 - 90 cm
Cotylorhiza T.
30 - 40 cm
Physalia P.
10 - 30 cm
Chrysaora H.
15 - 30 cm
Velella V.
4 - 8 cm
Carybdea M.
3 - 5 cm
Description rapide
Estimated size :
Coin
Hand
Ball / Plate +
Dominant color :
Clear
Pink / Violet
Brown / Yellow
Blue
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