What Kind of Conditions Do Divers Face?

What is it like for divers trying to find the bodies of the missing children off Dauphin Island?
Diving instructor Robert Cox is the president of Gulf Coast Divers in Mobile.
He says he's taught search and rescue techniques to many law enforcement divers in popular areas, like the waters off Dauphin Island.
Cox says, "We take people and actually have them run patterns. We'll put objects out and they have to find it. "
Fog and thunderstorms are problems above the water, but Cox says underneath, divers have to search in low or even zero visibility.
He says that what's important is "being able to cover an area and not so much be able to find something, but be able to say for sure that (what you're searching for) is not in that area when you finish."
What's more, Cox says divers are weightless underwater and have to deal with dis-orientation.
Cox says, "The fact that you're in contact with something firm, the ground for example, you have a sense for when you turn or move. When you're suspended in the water, you can turn and not even realize it because you have nothing for reference."
He also says water temperatures right now off Dauphin Island are in the upper 50's and that can be cold for divers.