1. BOX JELLYFISH Box Jellyfish attack humans unintentionally. Its venom is among the most deadly in the world. It attacks the HEART, BRAIN, and SKIN.
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4. Girl survives sting by world's deadliest jellyfish - Bonnie Malkin in Sydney (Telegraph.co.uk) A 10-year-old schoolgirl, Rachael Shardlow, has stunned doctors in Australia after she survived being stung extensively by the world's most venomous creature – the box jellyfish.