Thailand's navy has released a new video of the Thai youth football team that was found alive in a cave nine days after they went missing, as rescuers braced for a long and hard evacuation of the 12 boys and their coach.
'All 13 don't have to come out at the same time, ' he said.
But outside the cave, rescuers are struggling to come up with a plan to bring the boys out safely.
Aged between 11 and 16, the boys and their 25-year-old coach went missing on June 23, after they set out to explore the caves in a forest park following a training session.
While efforts to pump out the floodwaters would continue, Anupong said it's clear some areas of the sprawling cave can not be drained and that in order to get out, the boys may need to use diving gear while being guided by two professional divers each.
"Diving is not easy". If a rescue attempt is not made soon, it may be months before the boys and their coach see daylight.
A new video on Wednesday by the Seals shows the boys in good spirits - wrapped in foil blankets above the cave waters, talking and even joking with two Seal minders.
Chiang Rai provincial Governor Narongsak Osatanakorn said the health of the boys and coach were checked using a field assessment in which red is critical condition, yellow is serious and green is stable.
Despite being trapped in the cave for 11 days, the boys said they are doing OK.
After the initial contact with the British divers - two volunteer specialists who flew in to help with the search - the SEAL team returned to give the boys a meal of grilled pork and sticky rice, along with milk. "You have been here 10 days. I've missed him every second".
The SEALS posted photographs on Facebook showing their members working in chest-deep water in the cave, adding that it was pumping water as "fast as possible" as it prepares to bring out the stranded group. That information now has teams looking at whether there is a chimney or hole they can access instead of trying to get the boys out through the water. They also would wear wetsuits, boots and helmets.
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One thing working in their favor is that these are young boys who may not feel the same level of fear as older people might, he said.
Stenner says the safest option may be to wait for water levels to recede-but spending an extended period of time underground could take a psychological toll on the group. "Now we are teaching the children to swim and dive", Deputy Prime Minister Prawit Wongsuwan said, according to Reuters. The navy said medics will be sent to help and improve conditions in the cave.
Vernon Unsworth, from St Albans, Herts, convinced Thai officials to bring in heroic United Kingdom divers who found stranded schoolboys, a friend has revealed.
Sura Jeetwatee, a doctor involved in the operations, said the team survived by staying put and drinking water that dripped from stalactite formations.
He said officials had met and agreed on the need to "ensure 100 per cent safety for the boys when we bring them out".
"When the telephone line is ready, we will have relatives talk to them".
Mr Srisamu said: 'He used his knowledge of the cave to calculate where the group was mostly likely to be.
The plight of the boys and their coach has captured the world's attention.
"This is a Thai-led multinational rescue operation, and what's handsome here in this next phase is you're seeing everyone come together thinking about this problem set", said Capt. Jessica Tait of the U.S. Air Force.
The multinational operation has included divers from the Australian Federal Police, US military personnel, British cave experts and teams from China, Japan, Laos and Myanmar.