Calliactis tricolor

[2] When threatened by a predator, the anemone can release orange or white threads armed with stinging cnidocytes.

[3] Calliactis tricolor is found in the Caribbean Sea, the Gulf of Mexico and the eastern coast of Florida.

[4] Calliactis tricolor may adhere to a rock but is usually found attached to the hard surface of a living animal.

[3] The shell occupied by the thinstripe hermit crab (Clibanarius vittatus) often carries a tricolor anemone.

[2] Calliactis tricolor is often found attached to a gastropod shell occupied by another hermit crab, Dardanus venosus.