They're difficult to see, and their 10-foot long barbed tentacles contain venom that's so lethal it's considered to be one of the deadliest creatures on Earth. What is a box jellyfish? What part ...

BANGKOK -- A 20-year-old German woman died at a popular Thai resort island after being stung by a box jellyfish, police said Wednesday, the third reported fatality in Thailand in 14 months from ...