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Dardanus pedunculatus (Hermit crab).jpg
Hermit crab (Dardanus pedunculatus) with Calliactis species attached to its shell.
Scientific classification
Kingdom: Animalia
Phylum: Cnidaria
Class: Anthozoa
Order: Actiniaria
Family: Hormathiidae
Genus: Calliactis
Verrill, 1869

See text.

Calliactis is a genus of sea anemones. Species in this genus are mutually symbiotic with hermit crabs. The anemone gets a place to live and discarded scraps of the crab's food in exchange for its help in defending the crab.[1]


Species within the genus include:


  1. ^ Gusmão LC, Daly M (September 2010). "Evolution of sea anemones (Cnidaria: Actiniaria: Hormathiidae) symbiotic with hermit crabs". Molecular Phylogenetics and Evolution. 56 (3): 868–77. doi:10.1016/j.ympev.2010.05.001. PMID 20457262. 

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