13-year-old boy dies after box jellyfish sting in the Gulf of Thailand

A 13-year-old boy has died after being stung by a box jellyfish — one of the world's most venomous creatures — while swimming in the Gulf of Thailand, according to the dpa news agency. Thai authorities have tightened safety measures in response and are warning tourists against entering the water. Box jellyfish stings can be fatal within minutes.