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The Irukandji Jellyfish is tiny, but very venomous. A signpost warns swimmers of the presence of Chironex fleckeri (box jellyfish) Jellyfish stings in Australia can cause pain, paralysis and death for swimmers with exposed skin. Numerous venomous species of jellyfish occur in Australian waters, including the box jellyfish and Irukandji ...
It has been described as "the most lethal jellyfish in the world", with at least 64 known deaths in Australia from 1884 to 2021. [ 2 ] Notorious for its sting, C. fleckeri has tentacles up to 3 m (10 ft) long covered with millions of cnidocytes which, on contact, release microscopic darts delivering an extremely powerful venom.
When the venom of the box jellyfish was sequenced, it was found that more than 170 toxin proteins were identified. [38] The high quantity of toxin proteins that the box jellyfish possess is the reason they are known to be so dangerous. Stings from the box jellyfish can lead to skin irritation, cardiotoxicity, and can even be fatal. [38]
For the Netherlands, based on overall excess mortality, an estimated 20,000 people died from COVID-19 in 2020, [10] while only the death of 11,525 identified COVID-19 cases was registered. [9] The official count of COVID-19 deaths as of December 2021 is slightly more than 5.4 million, according to World Health Organization's report in May 2022.
The medusa is box-shaped and has a maximum height of about 110 millimetres (4.3 in) which is only about one half to one third the size of Chironex fleckeri. On average, however, the animals are much smaller, being more typically 60 millimetres (2.4 in) in height. The maximum inter-radial diameter is 95 millimetres (3.7 in).
For even more international statistics in table, graph, and map form see COVID-19 pandemic by country. COVID-19 pandemic is the worst-ever worldwide calamity experienced on a large scale (with an estimated 7 million deaths) in the 21st century. The COVID-19 death toll is the highest seen on a global scale since the Spanish flu and World War II.
At 5.4% the mortality rate is 2 percentage points higher than the global average - a number that reflects the country's lack of testing.
The Irukandji jellyfish (/ ɪr ə ˈ k æ n dʒ i / irr-ə-KAN-jee) are any of several similar, extremely venomous species of rare box jellyfish. With a very small adult size of about a cubic centimetre (1 cm 3 or 0.061 in 3 ), they are both one of the smallest and one of the most venomous jellyfish in the world.