The Green Kenya Tree Coral, also referred to as a Cauliflower Soft Coral.
It is not normally considered a threat to hard corals, but may itself be disturbed by their presence. The Kenya Tree Coral relies less on the symbiotic algae within it, and depends more on obtaining outside food. Microplankton, marine snow, and dissolved materials should make up the bulk of its diet.
This coral will come attached to a rock, shell or frag plug.
The approximate purchase size is 2" to 4".