This is all that can now be seen of the South Korean ferry, which capsized off the coast of Jeju island on Wednesday.<br/> <br />Only the hull is visible, the rest of the ferry submerged along with what's believed to be many of its 475 passengers.<br/> <br />(SOUNDBITE) SOUTH KOREAN COAST GUARD OFFICIAL KO MYUNG-SEOK SAYING:<br/> <br />"If the ferry had not listed, people could run away. However, it was difficult as the ferry listed 50-60 degrees, so that there will be many victims. And we need to find out why the ferry sunk in a very short period of time."<br/> <br />Only 149 people have been rescued and a massive search continues for hundreds still missing.<br/> <br />Most of them were students and teachers from the same high school.<br/> <br />It's not known why the ferry sank but the company operating it has expressed regret.<br/> <br />(SOUNDBITE) (Korean) EXECUTIVE AT CHONGHAEJIN MARINE CO., KIM YOUNG-BUNG, SAYING:<br/> <br />"We deeply apologised to families and I'm saying again we're really sorry. Our company will pr
