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!

CELEBRITIES 12 Hollywood Stars That Have Changed Significantly for the Role

12 Hollywood Stars That Have Changed Significantly for the Role

Almost all the stars of show business and Hollywood actors try in one way or another to keep themselves in good physical shape, but when it comes to a major role, how many are ready to subject their body to transformations for the sake of cinema? Well, art requires sacrifice ... And before you is a list of stars who dared to gain or lose weight well for the role in the movie.