It has a protruding round mouth, and the oral surface may be striped.

It has rows of small round protrusions (spherules) outside its tentacles.

The false plum anemone cannot easily retract its tentacles.

It preys mostly on molluscs, and has been reported to have a serious sting which can affect humans.

It is able to move about slowly and maintains territory by stinging genetically unrelated anemones with its spherules.