From bluebottles, to octopi, and jellyfish of all shapes and sizes, there are many creatures in Australia's coastal waters that cause stings or - in a few rare cases - death, for those unlucky enough to encounter them. Australia is in the midst of marine stinger season, with a spate of Irukandji jellyfish stings reported near Cairns, sightings of the Blue-ringed octopus in Sydney and Perth, and bluebottles turning up in an unusual location. Jellyfish experts say more needs be done to raise awareness of the dangers and manage the risk of stingers.