to go down into the hull. and into air pockets. >> speak about the tides. tell also bout the weather. the cold. obviously very tough conditions for what they're trying to do. >> the weather this winter. the temperature was below freezing not too long ago. we are just hitting spring here in south korea. so obviously a very real concern. it does buy potential survivors some time if possible. as for fog -- and the sea, characteristics, it seems, there haven't been any reports of incoming weather. and -- wind doesn't -- fairly low. the tide, rescuers are having to battle with. >> james, you can't survive in that cold, if you are not reached by the rescuers, right? >> absolutely. it doesn't bode very well. there have been unconfirmed reports from media about some