The Casualties
Due to the huge scale of the disaster, the authorities were unable to cope with the devastation, and emergency services and military forces were so stretched that immediate rescue was not an option. In fact, the Sri Lankan authorities had no idea where the train was for several hours, until it was spotted from the air. The local emergency services were destroyed, and it was a long time before help arrived. Dozens of people badly injured in the disaster died in the wreckage during the day, and many bodies were not retrieved for over a week. Some families descended on the area determined to find their relatives.
According to the Sri Lankan authorities, only a few dozen people on the train survived. The estimated death toll was at least 1,700 people, and probably over 2,000, although only approximately 900 bodies were recovered by the authorities, as many were swept out to sea or taken away unofficially by relatives. The town of Peraliya was also destroyed, losing hundreds of citizens to the waves and all but ten buildings. Over 200 of the bodies retrieved were not identified or claimed, and were buried three days later in a Buddhist ceremony near the torn railway line.
Read more about this topic: 2004 Sri Lanka Tsunami-rail Disaster