On 26 December 2004 an English girl, Tilly Smith< was walking on a beach with her family in Thailand. when they went down to the sea, Tilly saw that something was wrong. 'The water was all frothy,'said Tilly. 'It was bubbling.' Tilly remembered a short film her class had seen at school about massive wave calles a tsunami. In the film the sea became frothy just before the tsunami struck. Tilly knew that a tsunami was coming. She began to scream at everyone to get away from the beach. Minutes later, the Great Indian Ocean tsunami struck the coast.