Jindo, South Korea (CNN) -- Divers spent a grim day bringing body after body out of the sunken ferry Sewol.
They are carried onto a dock -- slowly, gently -- and then shrouded in white.
Some of the police officers standing guard wipe away tears.
At least 104 people have died and 198 others remain missing. Many of them are students and teachers on a field trip from a high school near Seoul, the South Korean coast guard said Tuesday.
Although 174 people were rescued soon after the vessel sank Wednesday, no survivors have been found since.
"The conditions are so bad, my heart aches. We're going in thinking there may be survivors. When we have to come back with nothing, we can't even face the families," said Bard Yoon, a rescue diver.
Speaking for the families and much of her country, South Korean President Park Geun-hye likened the actions of the captain and some crew members of the Sewol to murder, as police made more four arrests.
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The captain of the South Korean ship, Lee Joon-seok, is already facing a series of criminal charges for his role in the sinking.
"The actions of the captain and some of the crew are absolutely unacceptable, unforgivable actions that are akin to murder," Park said Monday in comments released by her office. She said she and other South Koreans were filled with "rage and horror."
The latest arrests of crew members bring the total number detained to seven as authorities investigate what went wrong on the ship as it sailed toward a popular holiday island.
Chonghaejin Marine, which operated the ferry, has posted an apology on its website.
"We pray for the Sewol victims who lost their precious lives due to the accident. We prostrate ourselves before the victims' families and beg for forgiveness.
"We apologize to all the people who are grieving for the loss of their loved ones. Also, we apologize to the people who had injuries, major or minor, due to this accident. We wish them a speedy recovery," read the statement. It was unclear when exactly it was posted.
"We will try our best to rescue the missing people quickly and we pray with all our hearts that there will be survivors.
"Once again, we beg for forgiveness from the victims' families and pray for the dead."
Read more here.