chunk: Two children, Jacques Mayol (Jean-Marc Barr) and Enzo Molinari (Jean Reno), have grown up on the Greek island of Amorgos in the 1960s. They challenge each other to collect a coin on the sea floor and Jacques loses. Later Jacques' father — who harvests shellfish from the seabed using a pump-supplied air hose and helmet — goes diving for shellfish. His breathing apparatus and rope gets caught and punctured by rocks on the reef and weighed down by water, he drowns. Jacques and Enzo can do nothing but watch in horror as he is killed.