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!

INTERESTING «A second before the disaster …»: 30 photos

«A second before the disaster …»: 30 photos

To catch a snapshot at the right time is an indescribable gift of a person that, fortunately or unfortunately, not all professional photographers possess, not to mention ordinary people. Photos taken a second before something inevitable are highly valued and will leave a mark in the memory of the participants for a long time. This is the selection of photos we have prepared for you today ...
INTERESTING Al Capone`s Prison

Al Capone`s Prison

The world's first correctional prison in Philadelphia, with the full name of Eastern State Penitentiary, first received a prisoner in 1829. For more than 100 years of work, a lot of villains and criminals were there, one of which was the well-known mafia boss Al Capone. How was this place different from other prisons and what does it look like now? More on this later ...