Originally posted by ViPeR_930
Bleached is the appropriate term for this case. The absence of zooxanthelae is called bleaching, and can be caused by stress to the anemone, or lack of sutable lighting. Bleached anemones exibit whitish translucent tentacles and often hide from light. A bleached anemone will require specialized care until it can regrow its zooxanthelae back - process that will take 3 months or longer even in the best conditions.
You're right. I just did a search on soft coral bleaching. I'd never heard of it in refernce to soft coral or inverts before. I did research on the subject back in college, and never saw any references to anything other than hard corals with calcium carbonate skeletons. A lot of sites still only mention hard corals, as seen below, but i should have dug a little deeper. Thanks for the correction.
These are quotes from a different site:
Coral reef bleaching, the whitening of diverse invertebrate taxa, results from the loss of symbiotic zooxantheallae and/or a reduction in photosynthetic pigment concentrations in zooxanthellae residing within scleractinian corals.
Scleractinian corals build skeletons of calcium carbonate sequestered from the water. When the coral polyp dies, this skeleton remains incorporated in the reef framework.