Enables actin filament binding activity. Involved in neuron projection morphogenesis; regulation of filopodium assembly; and regulation of lamellipodium assembly. Located in basal plasma membrane and cytoplasm. Expressed in several structures, including PDE; excretory cell; pharynx; somatic nervous system; and vulva. Is an ortholog of human ABLIM2 (actin binding LIM protein family member 2).