Predicted to enable activin receptor binding activity and nodal binding activity. Predicted to be involved in several processes, including circulatory system development; determination of left/right symmetry; and nodal signaling pathway. Predicted to act upstream of or within several processes, including animal organ development; digestive tract morphogenesis; and endoderm development. Predicted to be active in cell surface and extracellular region. Orthologous to human CFC1B (cripto, FRL-1, cryptic family 1B). [provided by Alliance of Genome Resources, Apr 2022]