2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/121236We obtain the parametric equations of all biharmonic Legendre curves and Hopf cylinders in the 3-dimensional unit sphere endowed with the modified Sasakian structure defined by Tanno.Dedicated to Professor Vasile Oproiu on his 65-th birthday, 15 pagesDifferential Geometry53C42; 53B25text