A fourteen-year-old girl has been killed in a shark attack in Florida. Officials say the girl and another teen (who was not injured) were swimming on boogie boards about 100 metres offshore when they noticed a dark shadow in the water.

A surfer heard a scream and found the girl in the centre of a bloody circle of water. He says the shark, which was trying to attack again, appeared to be a bull shark about two-and-a-half metres long.

Along with two other swimmers, the man towed the girl to shore, and she was taken to hospital, but she had not survived.