Fishermen prepare their boat in the port of Talcahuano, 500 km south of Santiago, as a preventine measure after Chilean President Sebastian Pinera issued a &quot;preventive alert&quot; due to the imminent threat of a tsunami following a powerful earthquake off Japan, though telling citizens to remain calm and continue normal life. Reactions to the possible arrival of a giant wave varied in Latin American nation along the Pacific coast, most of which have experienced devastating earthquakes in the past.  AFP PHOTO/CLAUDIO POZO (Photo credit should read CLAUDIO POZO/AFP/Getty Images) Photo: CLAUDIO POZO