Two teens stung by Irukandji while swimming at Fraser Island, Queensland.

[TruthTheOnlyDefense]

© Provided by Associated Newspapers Limited The family were off the coast of Fraser Island, where there have been four other cases of Irukandji stingings (stock image)

Two teenagers were rushed to hospital on Friday afternoon after reportedly being stung by Irukandji off the coast of Fraser Island.

A 13-year-old boy and 14-year-old girl were airlifted to Hervey Bay Hospital in a stable condition after reportedly receiving the poisonous stings about just before 5pm.

The teenagers were on a family boat trip. Two other people on board were also reported to have been stung but were stable and had no symptoms.

© Provided by Associated Newspapers Limited Two teenagers were airlifted to hospital after being stung by Irukandji jellyfish (pictured)

Irukandji are some of the smallest and most deadly jellyfish in the world, with the venom in its sting able to cause a fatal brain hemorrhage in a human.

Experts have warned the presence of jellyfish, especially the Irukandji species, will increase following heavy rainfall like that currently being experienced in Queensland.

'All this rain, it'll fire all jellyfish up,' toxicologist expert Jamie Seymour said.

'What you tend to find is after you've had big rainfall events, like we're having at the moment, we'll have large numbers of jellyfish, assuming the weather settles back down.'

Professor Seymour said earlier this week there had already been nearly 20 reported stings off the coast of Queensland, including four off Fraser Island.

He said the number was 'above average', with seven stings reported in Cairns, compared to one at this time last year.

'The [stinging] season has become longer. Fifty years ago, the season was about a month,' he said. 'Now, it's about 5-6 months.

'It correlates quite nicely with increasing water temperature.'

Two beaches in northern Queensland were temporarily closed last weekend because of the deadly creatures.

A teenage girl was hospitalised after being stung at Ellis Beach in Cairns.

None of the jellyfish have been seen since though, as the wild weather has caused choppy seas, and Irukandji prefer still waters.

https://www.msn.com/en-au/news/aust...ve-swarmed-beaches/ar-BBRyiRd?ocid=spartanntp