We begin almost a week to the minute, out of south korea, the death toll rising and it could go higher. Now, they are searching the cafeteria where so many of the High School Students were believed to have been. Tonight, there is evidence that it simply did not have to end this way. The latest, one south korean boys simple message, help us, the boat is sinking. His fate is unknown. The timing is simply stunning. That is because he said them long before helicopters were launched, before rescue ships arrived and before the evacuation was ordered. And here is the kicker, before the crews ship even got on the alarm and voiced their concern. His voice was picked up after he dialled the korean equivalent of 911, the exact same thing happening on the costa concordia. And today, the sad discovery of more bodies. Our kyung lah has more. What is going on with the effort right now, i know the death toll has risen pretty dramatically today. Reporter it has risen to 128, anderson, but it is still a frantic search, and you can tell just by looking over my shoulder. If you can see there are a number of divers who are parked right at the spot where the sunken ferry is, 65 feet below those buoys and the orange inflatables. Some of them are not filled with people because those divers are under water right now. This is dangerous, this is very, very arduous. They cant see more than a foot in front of them combing through this area inch by inch. And because they cant see they are worried about their own safety, arres well, because the can be hit by floating furniture. Now the navy did say they have six divers who they treated for pressure issues. They, anderson, have been seen inside pressure chambers in order to be able to continue to dive. So a very difficult and dangerous task still happening here off of jindo island, anderson . And there were more arrests today of crew members, correct . Reporter yes, two more crew members, bringing the total number of arrests to nine. This is certainly looking more like a criminal investigation every single day. And we got a little clarity from the crew members about what happened in the final moments. The big question, why went the life boats deployed . Well, one of the crew members said that he or she simply couldnt reach it. The button was too far away because the boat had already listed to its side. The natural question, why didnt you hit it sooner . We dont know that. The other thing we did learn is that the crew members say it was not that they hit anything. It was the balance of the ship felt wrong. Anderson. And the ships behind you seem pretty widely spaced out. Why is that . Reporter because were looking at now a week. It has been a week now since this accident happened. Take a look, you can see that there are a number of ships all around us. Some of those ships, especially the blue ones have trawlers out to their side, large nets and theyre going fact and forth across this area, why . Because of bodies drifting out to sea. That is the type of horror the country says they simply cant stand. They want to bring the bodies of the 15 and 16yearold children back home. Anderson . Kyung lah, i appreciate it. I want to bring in the Maritime Safety expert, jim staples. And president of Security Dynamics and retired navy seal, brandon web, joins us. And the idea that the young man missing now on board the ship was able to call the korean authorities and sound the alarm three minutes before an actual alarm from the ship came does that surprise you . Well, absolutely, disheartening, just shows the indecision on the crews part which again goes back to the training. We need to find out where the captain was at the time this call was made. And to be fair to him we have to know if the captain was on the bridge at the time. I dont have a time line, but yes, this is especially disheartening, especially when a young boy makes an emergency call over a seasoned captain. And is there a procedure for calling authorities . I read that it is the captain who in terms of the ship personnel, the captain has to make that distress call, is that true . Generally that is true, the captain is supposed to put out a may day call. So somebody on the bridge would wait for the captain to decide to make that call . Again, it would depend if the captain was incapacitated at some point. If the captain was killed in an accident then somebody else would have to make the decision which would usually fall to the second in command. Which is the ships mate. So if youre the captain, youre very much in tune to the ship. If youre down in your compartment you can sense something is going wrong and call up to the bridge. Absolutely, anybody will tell you if theyre sound asleep in the bed they will know immediately if they took too sharp of a turn or if something shut down with ventilation, if youre on that ship for a while you really know your vessels. Kyung, we have video of the life rafts, you can see almost all of them are not actually deployed. Now, the crew said they tried to make it to the rafts. But that they were slipping and that they couldnt. What does that tell you . Well, it seems to conform with everything were hearing now from crew members who have been rescued. That the captain waited too long to recognize the danger that the vessel was in. And the alert to evacuate the ship was not given until the vessel was already listing at 5plus degrees. Now what you have to realize is that with this ship unlike some ferry ships you have, for example in the baltic, where you have life boats and life rafts. In life rafts you can actually put the crew in, with the life rafts they have to be manually released from their lashings and pushed into the ocean where they would then deploy using co2 cartridges. Theyre all scrunched up, and you say with the co2, they have to be inflated. They have to be pushed over the side of the ship, some meters, 35 feet, where they would then deploy and the passengers and crew would have to get down the gangway to the water line, or in a worse case situation actually throw themselves off the ship and then swim to the life rafts. So life rafts are a far more precarious way to evacuate from a ship than a life boats. But as i said, the sewol didnt have life boats. And now in the cafeteria, it is believed a lot of the missing bodies may be there. Again, this is a delicate question, but is there any way at this point that survivors could be found . Could there be an air pocket a week into this . Brandon, can you hear me . Okay, i think were having trouble getting to brandon. Captain staples, the idea that the ships have life rafts rather than lifeti boats, i mean, woul you prefer to have life boats on a ship . Well, that depends, it depends on the distance it is running. I have always been first to go to life boats before the raft. Life boats, like the guest prior to me said they can be mounted on the vessel. You can enter the life boat on the vessel and release them from inside the life boat. So it is an easy way to get off the ship. With the life rafts theyre sitting in a metal container, like a cradle. And they can either have a ladder to come down or jump into the sea. But a little more difficult to get into a life raft than a life boat. Brandon, i think we got you back, the divers have made it into the cafeteria. We believe that is where a lot of the people could be found, is there any way that there could be survivors, could there be an air pocket into this . Okay, again, im told we dont have brandon. We actually learned the ship did not make a sharp left turn, captain. That it made what they call a j turn. Have you heard that expression . That is the first time i heard the expression j turn, there are two types of turns to do, a round turn or a williamson turn, and that williamson turn is generally done if a man falls off the side of the ship. The reason for that is so they dont get chopped up by the propellers. But a turn like this would not explain why the ship would list. If they took a turn like this proves the point he had a major stability problem with the ship. I would be very concerned about the stability when the vessel left the port. And kim, were told there was no passenger safety briefing for the passengers. But you said it could have to do with the current rules, but theyre not actually in effect until next year. Well, yes, actually it goes back to the titanic. As a consequence of the titanic disaster there was an International Convention that korea is a signatory to that steve na established the briefings for the crew that needed to be on the vessel. And in this case we know that as a consequence of the costa concordia. She left port and was not obliged to give a safety report, a briefing, where to find the life preserver, within 24 hours until the departure of the port. And now, you now must give a safety briefing prior to the vessel departing or as she is departing. But here is the thing, that doesnt go into effect until 2015. And that is very little help to the people who lost their lives on the sewol. Well take a quick break, let us know what you think. Just saying the remotely operated vehicles making their way through the ferry looking for anybody underneath, so far finding only bodies. Also tonight, the big changes that could be coming perhaps in a matter of hours. The search for flight 370. Constipated . 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So to go forward, it is very, very intuitive, very user friendly. To back it up, youre going to back it up this way. It is like a video game. Rhonda minese is a pilot. She works for the company that builds the rovs, the robot is directed by an rov pilot at the surface moving at two knots per hour. Even in murky water or at night, the robots can see. They have lights and special low visibility cameras. And if that is not enough they have sonar, too, which can pick up images up to 400 feet away and feed them back in realtime. So you can see the stern of the vessel. So you can see how the back of the boat is that square shape. And that is what were aiming at right now. Reporter a simple turn of the knob on the side of the controls and rhonda sends the rov for a deep dive. She rolls it back to return to the surface. So whenever this mini rov is used it is moved into the water through a rope line. And you can see the water were on is only about 20 feet deeper. But if this were going to be deployed to search inside the sewol ferry that would not be a problem, because this mini rov can actually work in water as deep as a thousand feet. Keep in mind, divers can safely go down only about 130 feet. And the robots can swim upward inside a ship, too, just as divers in south korea are doing to reach the upper floors on the doomed ferry. If you want to get to a higher level on say the ferry, could the mini rov actually climb . Yes, they would have to have a really good idea of the blueprint of the vessel. Because it can be very disconcer disconcer disconcerting, actually like that where it is flipped. And some doors can be overhead. Reporter and if the mini rov does find anything, it is small enough to pull a human grabber on its own. And youre actually with the rov, can you show us more about it . Because the technology is fascinating. I have never seen this. It is fascinating, we worked with it today. Over here, it is one of five thrusters on the rov which would actually send it back to the surface. Here is the video camera that it has, as well. And this is the grabber that i talked about with the piece. What is interesting, anderson, they come in all different sizes and shapes and have different functions, as well. Some just grab items like we mentioned which is what a grabber does. Others can actually cut things, others can tie a line onto a vessel if it is a small vessel and pull it out of the water. And the others can be used to recover bodies. In terms of what this would be doing in south korea and the ocean there the first thing it would do is probably pull out all the furniture and all the large debris, im told that would block the divers and make it safer. The next mission would be a recon, to go around the ship and ferry. That way the divers would know where theyre most needed and assess the situation better. All right, randi, appreciate it. And looking into the delicate under sea operations, with our panel. Brandon, let me start off with you. First of all, we keep hearing about all the debris in the water, the blocked passage ways. How useful is an underwater vehicle like this . Well, it is a tremendous asset, any time you have a rescue operation in open ocean with visibility near zero, it is incredibly tough for these divers just to maintain their position and just to let alone figuring out where theyre going. So having a device like this is just a tremendous asset to really speed up the search. This is a massive ship just about 500 feet in length. So it is an incredible job that these guys have to do under really harsh conditions. Yeah, a lot of the volunteers, it has to be so disorienting, im a diver, to have that low of visibility around you, to not see a foot in front of you. To have all of this debris and human bodies trapped underneath all of this wreckage. Can you describe what diving under these conditions is like . Well, even you know, we do a lot of diving in ports where you have similar conditions, near zero visibility. And oftentimes, you lose track of what is up and what is down. So theyre really going you get disoriented, you cant tell what is up and what is down . Yeah, absolutely. A lot of the diving, there is no bubble bubbles, you get disoriented. You really sometimes have to follow the weld of the ships seam just to find the surface, to find yourself to get up on the surface. But you know, listening to the conversation earlier, you know, i as i understand it, the third mate was at the helm of the ship. And i grew up working on charter boats as a kid before i joined the navy to be a s. E. A. L. I was about to test for my captains license. But it just really seems from what i know of the time line and the captain who was on the bridge for 20 minutes and just didnt make a decision. And as a parent myself, you hear about the kids making the phone calls to their parents, it just seem s like indecision on the captains part. Because captain staples, there was time for at least evacuation or at least mustering. The ship didnt go down in a matter of minutes. Without a doubt, there was plenty of time to get the life rafts deployed, which should have been done. And again, to have a young school child make a call before the seasoned captain, that should tell you Something Like that. That the captain was very indecisive. And is the captain going to see better than the diver . Again, the limitation is not only because of lack of light but the amount of silt you have down there. But i applaud the use of this rov because you know, we have to be realistic. Were entering into a phase now that is more recovery than it is rescue. This is almost a week into the event. Because of hypoxia, because of cold injuries. Because of the lack of hydration. All of this really points to a fact that we have no now look at a risk analysis for the divers. This is extraordinarily stressful on these individuals. I know that navy divers that have been involved in rescue efforts in the past that were much shorter and much less stressful than this ended up having to have psychological counseling from this, because it was so disturbing for them. And risking lives when you have Technology Available instead i think is a good move on the part of the south korean government. I think what theyre doing and the heroism to do this, theyre doing it around the clock. Just amazing. And you can learn more always by going to cnn. Com, and just ahead, the breaking news for flight 370. The unmanned bluefin drone now in the target area, and is there a plan b . Plus, more about the teenager who stowed away on a hawaiian flight, including his intended destination, that was not actually maui. 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Innovations that work for you. Thats health in numbers. Unitedhealthcare. Breaking news tonight, ten meanwhile aircraft, and 12 ships will help in the search for flight 370. The search could get an entirely new focus. More on that in just a moment. As you know it has been six weeks since they have been looking for any sign of flight 370. Some family members and family members hope