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Cactosoma arenarium Prickly Sea anemone

Cactosoma arenarium is commonly referred to as Prickly Sea anemone. Difficulty in the aquarium: There are no reports available yet that this animal has already been kept in captivity successfully. Toxicity: Toxic hazard unknown.

Profilbild Urheber Jeff Goddard, USA

Prickly Sea Anemone Cactosoma arenaria, California, USA 2023


Courtesy of the author Jeff Goddard, USA Copyright Jeff Goddard, USA. Please visit www.flickr.com for more information.

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lexID:
15881 
AphiaID:
592961 
Scientific:
Cactosoma arenarium 
German:
Stachelige Anemone 
English:
Prickly Sea Anemone 
Category:
Актинии 
Family tree:
Animalia (Kingdom) > Cnidaria (Phylum) > Hexacorallia (Class) > Actiniaria (Order) > Halcampidae (Family) > Cactosoma (Genus) > arenarium (Species) 
Initial determination:
Carlgren, 1931 
Occurrence:
Bering Sea, British Columbia, California, Canada Eastern Pacific, Gulf of Alaska (Pacific), Gulf of California, North Pacific (Ocean), Northeast Pacific Ocean, West Coast USA 
Marine Zone:
Mesopelagial
Mesopelagic zone
lies between 200 to 1000 meters depth, thus it is considered the "twilight zone of the sea" between the light and dark depth zones. 
Sea depth:
1 - 201 Meter 
Habitats:
Intertidal zone, Tidal Zone, Kelp forests, Seawater, Sea water, Soft grounds 
Size:
1.97" - 2.76" (5cm - 7,5cm) 
Temperature:
46.4 °F - 55.4 °F (8°C - 13°C) 
Food:
Carnivore 
Difficulty:
There are no reports available yet that this animal has already been kept in captivity successfully 
Offspring:
Not available as offspring 
Toxicity:
Toxic hazard unknown 
CITES:
Not evaluated 
Red List:
Not evaluated (NE) 
Related species at
Catalog of Life:
  • Cactosoma abyssorum
  • Cactosoma arenaria
  • Cactosoma aspera
  • Cactosoma chilensis
 
More related species
in this lexicon:
 
Author:
Publisher:
Meerwasser-Lexikon.de
Created:
Last edit:
2025-12-21 21:44:51 

Info

Cactosoma arenarium Carlgren, 1931

Cactosoma arenarium is a sea anemone of the Halcampidae family. Members of this family are terrestrial, solitary, and carnivorous. They can reproduce both sexually and asexually. In addition, they are able to move around if necessary and seek a new, better location.

Cactosoma arenarium is colloquially known as Spiny Anemone. The genus Cactosoma currently contains only 4 scientifically described species:
Cactosoma abyssorum Danielssen, 1890
Cactosoma Arenarium Carlgren, 1931
Cactosoma asperum (Stephenson, 1918)
Cactosoma chilense (McMurrich, 1904)

The prickly anemone is quite small at a maximum of 7.5 cm and quickly retreats into the ground if disturbed.

Synonymised names:
Cactosoma arenaria Carlgren, 1931 · unaccepted
Castosoma arenaria · unaccepted

External links

  1. EOL (en). Abgerufen am 18.08.2023.
  2. The Emperor's Cadlina, hidden diversity and gill cavity evolution: new insights for the taxonomy and phylogeny of dorid nudibranchs (Mollusca: Gastropoda) (en). Abgerufen am 21.12.2025.

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Prickly Sea Anemone Cactosoma arenaria, California, USA 2023

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