Watersiporidae is a family of bryozoans in the order Cheilostomatida.
On flat surfaces Watersipora at first forms small encrusting patches, but as these grow they begin to buckle and fold and overgrow itself, forming foliose (leaf-like) structures in sheltered waters. These can be up to 30 cm (12 in) high and 60 cm (24 in) across. The colonies are usually some shade of orange or red, with varying amounts of black.