Australia is well-known for its myriad deadly creatures, but the peanut-sized Irukandji remains rather mysterious. It is virtually impossible to see and is tiny enough to pass through nets meant to keep jellyfish away from popular swimming spots.
Its sting can lead to symptoms including shooting pains in the muscles and chest, vomiting, restlessness and anxiety. Some symptoms can last for more than a week, and the syndrome can occasionally lead to a rapid rise in blood pressure and heart failure.
In 2002, two tourists were killed in separate incidents after being stung by the tiny creatures off northeast Australia — the first recorded Irukandji fatalities.
Southall was taken to a hospital where he spent the night, but has recovered enough to enjoy the final week of his six month assignment. Link -via Buzzfeed