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Actinostola callosa has approximately 100 short tentacles surrounding a large white, yellow, or orange disc; the mouth opening is deep orange.
The cylinder of the sea anemone is usually white and tapers toward the top.
The rough-skinned sea anemone is gregarious, often exhibiting varied coloration, which can give the impression of different species.
The amphipod Stenothoe brevicornis Sars is an obligate commensal of the sea anemone; this amphipod spends its entire life cycle among the tentacles of its host and feeds primarily parasitically on host tissue.
As with some other sea anemone species, Actinostola callosa is also capable of moving away from its location by crawling, though this has rarely been observed.
The crown jellyfish Periphylla periphylla is also on the anemone’s menu.
We would like to thank Erling Svensen for providing us with the photo.
Synonyms:
Actinostella callosa (Verrill, 1882) · unaccepted
Actinostola (Urticina) callosa (Verrill, 1882) · unaccepted
Actinostola atrostoma Stephenson, 1918 · unaccepted
Actinostola sibirica Carlgren, 1901 · unaccepted
Catadiomene atrostoma Stephenson, 1918 · unaccepted
Urticina callosa Verrill, 1882 · unaccepted (original binomen)
The cylinder of the sea anemone is usually white and tapers toward the top.
The rough-skinned sea anemone is gregarious, often exhibiting varied coloration, which can give the impression of different species.
The amphipod Stenothoe brevicornis Sars is an obligate commensal of the sea anemone; this amphipod spends its entire life cycle among the tentacles of its host and feeds primarily parasitically on host tissue.
As with some other sea anemone species, Actinostola callosa is also capable of moving away from its location by crawling, though this has rarely been observed.
The crown jellyfish Periphylla periphylla is also on the anemone’s menu.
We would like to thank Erling Svensen for providing us with the photo.
Synonyms:
Actinostella callosa (Verrill, 1882) · unaccepted
Actinostola (Urticina) callosa (Verrill, 1882) · unaccepted
Actinostola atrostoma Stephenson, 1918 · unaccepted
Actinostola sibirica Carlgren, 1901 · unaccepted
Catadiomene atrostoma Stephenson, 1918 · unaccepted
Urticina callosa Verrill, 1882 · unaccepted (original binomen)


Erling Svensen, Norwegen