Box Jellyfish No Bigger Than Your Fingernail Can Kill You in The Blink of an Eye: So what makes this tiny jellyfish so deadly? Well, it’s a type of Irukandji jellyfish which are able to fire their stingers into their victims, causing symptoms collectively known as Irukandji syndrome. While most jellyfish only have stingers located on their tentacles, the Common Kingslayer and other Irukandji jellyfish have stingers on their bells as well.
The winners in the British Wildlife Photography Awards 2013
'Barrel jellyfish', Sark, Channel Islands by Sue Daly Picture: Sue Daly/BWPA