Distraught relatives looked on as the bodies of the two civilians killed in Tuesday’s shelling were brought ashore to the mainland by the South Korean coastguard.
They were met by an official guard of honour.
A similar scene played out at a military hospital near Seoul, where tributes were paid to the two marines also killed on Tuesday.
Relatives and soldiers laid flowers and burned incense at the memorial to Seo Jeong-woo and Moon Kwang-wook.
Later in the day, South Korean Prime Minister Kim Hwang-sik arrived to pay his respects.
There were angry scenes at a meeting with the mens’ commander, as some relatives demanded that South Korea’s defence ministry reveal the exact cause of the mens’ death.