7 Most Dangerous Jellyfish in the Underwater World

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Portuguese boat (Physalia physalis)

The second name for jellyfish is physalia. Although this is rather not even a jellyfish, but a whole colony of polypoid and medusoid individuals. The «bite» of a Portuguese boat is extremely dangerous and painful (sensations are compared to hitting the skin with a whip). The main risk is the systemic effects of the poison. In severe cases, intense pain is followed by fever, shock, and impaired heart and lung function, which can lead to death. Physalias are accustomed to moving in groups of up to 100 colonies, and sometimes in resorts they have to close entire beaches because of them!

SOCIETY The 7 Worst Epidemics in Human History

The 7 Worst Epidemics in Human History

The new year 2020 began with the advent of a new virus in the Chinese city of Wuhan. To date, coronavirus has claimed about 100 lives and continues to test people for strength. The history of mankind has repeatedly known extremely dangerous viruses and epidemics, which claimed millions of lives, wreaking havoc on the trail of panic and chaos. But even the worst of all infections, people managed to win and live on ... exactly until the next outbreak of some mutated flu.
INTERESTING Empty Ghost Towns in China

Empty Ghost Towns in China

In the early 2000s, the Chinese government threw all its efforts into the construction and development of large cities. For this reason, today we see many skyscrapers, large business centers and residential buildings built according to the latest technological inventions. This process does not stop to this day, and therefore if you ride around China today, you can stumble upon real ghost towns. Large, equipped with everything necessary for life, but did not know it ....