Complex sentence: This small solitary free-living coral is not fixed to the substrate which the diameter does not exceed 2.5 cm. It has a very particular shape making it easily identifiable, composed of one or two corallites and has a figure of eight when observed from top.
Split into simpler sentences: This small solitary free-living coral is not fixed to the substrate which the diameter does not exceed 2.5 cm. It has very has a very particular shape making it easily identifiable. Indeed, they are composed of one or two corallites and have a figure of eight when observed from top.