A five-year-old boy stung by a deadly box jellyfish at a beach in Australia is lucky to be alive and prompt treatment with vinegar helped save him. The boy was swimming at Casuarina Beach near Darwin, ...

You should steer clear of a box jellyfish. The marine animal’s sting can cause serious and sometimes fatal symptoms in a matter of minutes. Despite their name, jellyfish aren’t fish. They’re Cnidaria, ...