The Department of Marine and Coastal Resources (DMCR) has heightened monitoring for lethal box jellyfish along coasts of Thailand following the tragic death of a 13-year-old boy, who sustained fatal stings while swimming off Ban Fai Tha Beach in Sichon district of Nakhon Si Thammarat province on August 1.
Natural Resources and Environment Minister Suchart Chomklin expressed his deep condolences to the victim's family on August 3 and expressed concern for coastal visitors and locals. He instructed the DMCR to coordinate closely with relevant agencies in stepping up safety protocols and preventing similar tragedies.
DMCR Director General Pinsak Suraswadi stated that regional officials have been ordered to collaborate with provincial authorities, public health agencies, local administration organisations and beachfront businesses to monitor risk areas continuously and issue public warnings.
Beachgoers are urged to avoid entering the water if toxic jellyfish are spotted, strictly heed lifeguard instructions and never touch jellyfish directly.
In response to the incident, the DMCR has issued reminders of the proper first-aid procedure for box jellyfish stings, in collaboration with health authorities.
If a sting occurs, the victim should be pulled from the water immediately to prevent drowning, kept completely still and emergency medical services (1669) must be contacted right away.
Rescuers should pour household vinegar over the affected area continuously for at least 30 seconds to halt the discharge of un-fired venom cells.
Once rinsed, any remaining tentacle fragments should not be touched directly, but removed using tweezers or a stick.
CPR should be performed immediately if the victim stops breathing or loses a pulse.
Authorities have strongly advised against pouring fresh water, plain water or alcohol over the wound. Nor should the affected area be rubbed, scratched or massaged, because these actions trigger the stinging cells to release more venom into the bloodstream, which can prove fatal.
Officials emphasised that, while vinegar halts venom release, it does not relieve pain. Any heat or cold packs applied for pain relief must only be used after completing the required vinegar rinse.
To ensure rapid response, the DMCR has installed vinegar rescue stations, equipped with first-aid instruction signs, along high-risk public beaches and is briefing tourism operators ahead of the high-risk season.
Tourists and residents can track monitored areas and receive updates through the DMCR's Marine alert website (warning.dmcr.go.th) and mobile application.









