Students who survived South Korea's ferry disaster have described escaping from flooded cabins as the ship sank.
The students had obeyed the crew's orders to stay put, even as water started coming in as the Sewol listed.
"We continued to wait and only came outside because the water filled the room so much," one student said.
The Sewol ferry sank on 16 April off Jeju island, killing 304 people. The students were giving evidence against the captain of the Sewol and 14 crew.
They are accused of charges ranging from negligence to homicide.
The BBC's Lucy Williamson - at the trial - says that the picture painted by six female students giving evidence on Monday was of passengers left to find their own way out of the sinking ship.
The students who survived floated up to cabin doors - by now overhead - and were pulled out by their classmates.
Our correspondent says one student remembered how the water gushed in and swept away several of her friends,
Another questioned why rescuers did not enter the ship to help them get out.
It was the first time any of the teenagers on board the ferry have testified in a trial that is expected to last several weeks.
Most of those who died on the Sewol were teenagers from the same high school on a school trip.
While the crew are charged with abandoning ship, the captain and three officers are also charged with "homicide through wilful negligence".
Investigators say the ferry had been illegally modified to carry more passengers and cargo, and was overloaded.
But prosecutors say the actions of the captain and crew - including instructing passengers to stay in their cabins as the ship listed - led to more deaths.
The students are testifying at a district court near their homes near Seoul, rather than at the actual trial in the southern city of Gwangju.
The disaster - which correspondents say was South Korea's worst maritime disaster in 44 years - resulted in harsh criticism of both bureaucrats and business officials for alleged failings or corruption.
Officials from ferry operator Chonghaejin Marine are also the subject of separate legal proceedings.
Earlier this month, police identified a body found on 12 June as company owner Yoo Byung-eun, who had been the subject of a man-hunt since the disaster.
His son, Yoo Dae-kyun, was arrested on Friday.