The ferry had 459 passengers and crew on board.
Most of the passengers were teenagers and their teachers on a school trip.
The rescue operation has recovered about 164 people so far, However, hundreds are still missing.
The ferry had been traveling to the southern tourist island of Jeju when it sank just three hours from it's destination.
Rescue teams, made up of several members of the navy and coast guard divers, as well as civilian and dozens of rescue boats and helicopters are still searching for survivors
The 480 feet long ferry has a capacity of about 900 people and motor vehicles, was built in Japan in 1994.
More photos emerging from scene when you continue...
South Korean coast guard officers try to rescue passengers from the sunken ferry
dozens of rescue boats try to rescue passengers