Cladocora arbuscula (Lesueur 1821) Colonies are clumps of small, tubular branches and corallites, which either may be attached to rock on reefs, especially in sedimented areas, or they may be loose and free living, commonly on rubble or in seagrass. The basal parts of the branches are commonly dead and may be fragmenting.

Cladocora arbuscula (Lesueur, 1820) Characters: Colonies consist of clumps of interlocking tubular corallites which are less than 4 millimetres diameter. Clumps may be compact and attached to hard substrates or loose aggregations on soft substrates which readily fall apart if disturbed. Usually only the terminal parts of corallites are alive.