The discovery comes a day after prosecutors announced will seek the death penalty for the ship’s captain.
The boat was traveling along the Padma river when it sank.
Coast guard chief Kim Suk-kyoon originally said 174 survived the April 16 disaster. The is the most recent of many government mishaps that families of victims have criticized.
Video released on Monday by the South Korean Coast Guard shows what appears to be 69-year-old Captain Lee Joon-seok abandoning the sinking ferry before other passengers.
Chung Hong-won, the country’s No. 2 ranking official, announced his immediate resignation on national television, and apologized for the government’s response to the ferry disaster that left more than 300 missing or dead.
Ferry crashes while docking at a New York City pier. Multiple injuries reported.