HolopsammaHolopsamma is a genus of sponges belonging to the family Microcionidae.The species of this genus are found in Australia and Central America.Species:Holopsamma arborea Holopsamma crassa Holopsamma elegans Holopsamma favus Holopsamma laminaefavosa Holopsamma macropora Holopsamma pluritoxa Holopsamma ramosa Holopsamma rotunda ''Holopsamma simplex''