By JAMES MASSOLA (stuff.co.nz)
A former Thai Navy Seal participating in the rescue effort at Tham Luang cave has died overnight during the effort to rescue the 12 boys and their coach because of a lack of oxygen, according to Thai authorities.
The body of the dead former Seal, Sergeant Saman Guana, who was 37-years-old and who died in cold water around 2am, will be sent back to Sattahip Naval base and then sent on to his family.
There will be a funeral in his home town in Rioet Province, in the north-east of Thailand.

SUPPLIED: Former Thai navy seal Saman Guana who died at Tham Luang cave.
Navy Seal commander Rear Admiral Apakorn Yookongkaew said that staff morale was still good despite the death.