I've seen anemones in the wild before, but haven't come across any with chlorophyll yet...or I might have, just a chlorophyll form that's not green (since many species host algal symbionts of various types)...
There are many organisms with chlorophyll that aren't plants though, I wouldn't use that as a trait to associate with being semi-plant. Certain flatworms, several algal phyla, euglenids, etc.