Enables actin filament binding activity and signaling receptor binding activity. Involved in cytoskeleton organization; positive regulation of actin filament depolymerization; and positive regulation of embryonic development. Acts upstream of or within several processes, including neural crest cell migration; neural fold formation; and response to amino acid. Located in cell-cell junction; cortical actin cytoskeleton; and lamellipodium. Is expressed in several structures, including central nervous system; early conceptus; embryo mesenchyme; genitourinary system; and immune system. Orthologous to human CFL1 (cofilin 1). [provided by Alliance of Genome Resources, Apr 2022]