South Korean Coast Guard video shows the capsized ferry off South Korea and members of the country's coast guard rescuing survivors.
The ferry was carrying 462 people, with only 174 rescued so far.
More than 280, many of them students from the same high school, are still missing in what could be the country's biggest maritime disaster in over 20 years.
It is not immediately clear why the ferry lifted heavily onto its side and capsized in apparently calm conditions off South Korea's south west coast.
South Korean Coast Guard video shows the capsized ferry off South Korea and members of the country's coast guard rescuing survivors.
