READ MORE : Choi Duk - ho , 19 , made first distress call as South Korean ferry sank . While other students called their parents , Choi 's decision to call 119 saved lives . Choi was one of 325 kids from his high school aboard ferry ; only two survived . South Korea 's prime minister has resigned over news of ferry disaster .
Choi Duk - ho , 19 , made first distress call as South Korean ferry sank . While other students called their parents , Choi 's decision to call 119 saved lives . Choi was one of 325 kids from his high school aboard ferry ; only two survived . South Korea 's prime minister has resigned over news of ferry disaster .