The students were on a school trip when the 6,825-ton ferry Sewol capsized and sank off the southwestern island of Jindo on its way to the southern resort island of Jeju on Wednesday. The captain, Lee Joon-seok, and two crew members have been arrested on suspicion of negligence and abandoning people in need. Oh said that a first mate — who is detained — used his knowledge of the ship's layout to help direct rescuers as they worked to pull passengers off onto rescue boats. Captain Lee Joon-seok told passengers to stay in their cabins as the ferry listed and filled with water, then took at least half an hour to order an evacuation and apparently escaped on one of the first rescue boats. Divers have managed to reach many of the cabins in the hull of the upturned ferry, although they are still trying to get into the ship's restaurant, where they believe many of the passengers were trapped. At a Cabinet briefing Monday, President Park Geun-hye said, "What the captain and part of the crew did is unfathomable from the viewpoint of common sense. The third mate, who has been arrested, was steering at the time of the accident, in a challenging area where she had not steered before, and the captain said he was not on the bridge at the time. ___ 
 
 Associated Press writers Hyung-jin Kim in Mokpo, South Korea, Minjeong Hong in Jindo, Chang Yong-jun in Ansan, and Foster Klug, Youkyung Lee, Jung-yoon Choi and Leon Drouin-Keith in Seoul contributed to this report.
– Members of the sunken South Korean ferry's crew have been likened to "murderers," and two more were detained today, the BBC reports. But some of them, the AP notes, were actually heroes, survivors say. Four gave up their life jackets for passengers amid a shortage; others broke windows to drag would-be victims out of the ship. One refused to leave until she got students to safety and was later found dead. Says the wife of another, who's still missing: "His last words were, 'I'm on my way to save the kids.'" Meanwhile, the number of victims continues to rise and now stands at 108, the BBC notes. Families have agreed that after two more days of searching the rescue operation can become a salvage effort; authorities today set up an underwater robot to help haul up the ship. Relatives are acknowledging that it's unlikely any more will be rescued. "It's been too long already. The bodies must be decayed," an uncle of one of the students tells the AP. In other news: One theory as to how the ship sank: It took a turn too sharply. Only two of 46 lifeboats were accessible because the ship tilted so much, the BBC and NBC News report. The ship's initial distress call came from a frightened boy who called the emergency number 119. "Save us! We're on a ship and I think it's sinking," he reportedly said. Afterward, about 20 more children called 119. Many child survivors may need therapy following the disaster. "We're considering sending about 20% of the patients to a psychiatric clinic with consent from themselves and their parents in the judgment that they require constant intervention," says a hospital chief, via Yonhap. Classes at their school are set to resume this week.