Biology/Natural History: C. miniata
uses its oral tentacles to trap small organisms and detritus suspended in the water. Undisturbed animals may have the body curved into a U shape, so that both the mouth and anus are exposed to moving water. The tentacles can retract rapidly if disturbed. C. miniata
is predated on by the sea stars Dermasterias imbricata
, Solaster stimpsoni,
and S. endeca
. Kelp greenling fish sometimes nip the oral tentacles. Tests have shown that neither the body wall nor the viscera are toxic to fish. Eggs, embryos, and larvae are orange in color. The larvae have been found in the plankton of the Puget Sound during the months of March and April.
This species sometimes contains an internal parasitic gastropod, Thyonicola dogieli, which appears as a coiled, egg-filled tube.