to the underwater search. it's monsoon season we're hearing reports of 13-foot waves. how does that impact the search underwater, snow. >> even if it calms down it will be turbid. all the water that rains onland runs off and brings dirty water to settle out. it takes days or weeks for that to settle out and get some clarity. i noticed there from the footage that they're using open circuit divers which is scuba. so that's -- they're dropping these guys in here. usually on a commercial job they'll have tether divers and they'll nowhere they are. so that's more dangerous because they're on their own going into wrecks or trying to find -- penetrate into these areas with very little visibility. that's tough. >> interesting. so the water is cloudy, dirty, you can't see through it and that will last even when the conditions improve? >> very much so. it will take a while to settle it. there's no gulf stream current to sweep it clean fast. >> but once these waves and the wind stop that is at least one of the obstacles out of the way. >> oh yes. but it's got to stop for some